Article 4 of 4  ·  Series I  ·  Published 16 October 2026  ·  Analysis → Forecast → Recommendations

How this series measures things. Every article applies the same three questions to its subject. Core size: how many residents at the same time work, earn above subsistence, pay more in tax than they receive, and spend broadly at home. Core productivity: how much value each of them produces, and how much capital, automation and AI stands behind each one. Core capture: how much of that value stays inside the country as wages, taxes and domestic demand. Articles 1 to 3 measured each force separately. This article puts them together, sets out what is already decided and what is still open, and turns the result into forecasts to 2040 and a detailed playbook.

1. The Signal

In the space of a few weeks in late 2026, the forces described in this series stopped being projections and started showing up in prices.

Japan's ten-year government bond yield reached about 3%, nearly double its level a year earlier and the highest in roughly three decades (reported, Seoul Economic Daily citing Bloomberg, October 2026). For most of the past quarter-century, Japan was the textbook case that an ageing society means near-zero interest rates. That assumption has now broken in the country that inspired it.

Germany's statutory pension insurer said the contribution rate, held at 18.6% of gross pay since 2018, would need to rise to 19.9% in 2028, and could reach 20% in 2029, as reserves run down (reported, Deutsche Rentenversicherung, June 2026). Every percentage point is paid half by the employer and half by the employee, on every wage in the country.

In the United States, the share of business output paid to workers fell to 52.8%, the lowest since 1947 (measured, Bureau of Labor Statistics). In the same month the IMF raised its global growth forecast, citing AI investment, and warned that a correction in that investment could erase the gain.

In the EU, the employment rate of people aged 20 to 64 reached 76.1% in 2025, the highest since the series began in 2009, and still 1.9 points short of the 2030 target of 78% (measured, Eurostat, October 2026). Europe is putting more of its population to work than ever, and it is not quite enough.

Interest rates, pension contributions, the worker share of output, the employment rate. These are the prices and ratios through which a shrinking Economic Core reaches households, firms and investors. Article 1 described the shrinking Core. Article 2 described the production model that can sustain it. Article 3 showed that AI amplifies starting conditions rather than equalising them. This article asks what all of that adds up to by 2030, 2035 and 2040, and what to do about it.

2. The Mechanism: one model, three forces, two open questions

The series reduces to a single relationship. An ageing economy's capacity to produce, earn, tax and spend depends on three things: how many productive residents it has, how much each produces, and how much of what they produce reaches households at home.

Economic Core capacity = Core size × Core productivity × Core capture

Each article examined one force acting on this relationship.

—   Article 1, Core size. The group that works, pays and spends is shrinking faster than the population, and the export channel that once masked it is narrowing. Ageing effects have crossed from slow drift into thresholds in networks, housing and pensions.

—   Article 2, Core productivity. The response that fits an ageing economy is to put far more capital, automation and AI behind fewer, better-paid people, protect a short list of strategic capabilities, and convert newcomers quickly into self-sufficient taxpayers. The record of governments picking projects is poor, so the test is output per worker and real wages, not plants subsidised.

—   Article 3, Core capture. The same technology multiplies workers where they are scarce and replaces them where they are abundant. Whether productivity becomes demand depends on whether gains reach households.

What is already decided

Some of the future is not forecast. It is arithmetic on people already born.

Fertility could rise; Korea's births grew 6.7% in 2025 and its fertility rate reached 0.80. Even a sustained rebound would not change the working-age population before the late 2040s. Migration can shift the numbers at the margin, and in Germany's case substantially, but Destatis estimates that holding the 20-to-66 group steady would need about 570,000 working-age arrivals a year, far above recent selective-migration volumes.

What is still open

Two questions decide most of the outcome.

First: do productivity gains from AI and automation reach wages? If they do, a smaller workforce becomes a better-paid one, and the Core holds its spending power and tax base. If they flow mainly to owners of capital, output rises while the Core weakens.

Second: do ageing economies adapt their production model? Adaptation means advanced domestic production in strategic sectors, automation that multiplies workers, selective migration with fast conversion, and infrastructure planned for the population that will exist. Drift means protecting existing jobs and structures, importing low-wage labour to fill gaps without raising productivity, and letting fixed-cost systems fail where density falls.

Two further uncertainties shape the path but not its basic direction: whether the interest-rate regime settles high or low, and how far trade fragments as ageing exporters compete for the same buyers.

The scenario space

The two main questions produce four scenarios for the rich ageing economies to 2040.

Probabilities are judgements, not model outputs, and apply to the rich ageing economies taken together. Countries will diverge. Japan and Korea sit closest to C with elements of A. The United States is split between A and D. Germany and much of the EU sit between C and D. China sits between C and D, with a large export surplus as the release valve.

How to tell which quadrant is unfolding

The four scenarios are not abstractions. Each leaves a distinct trace in published data within two to three years.

Scenario A shows up as output per hour and real median wages rising together, a stable or rising labour share, falling industrial headcount with rising industrial output, and migrants reaching employment faster.

Scenario B shows up as strong wage growth in capitals and AI-exposed services alongside falling manufacturing output, widening gaps between regions, and rising property prices in a few metros while peripheral prices fall.

Scenario C shows up as stable output per person, stagnant median wages, orderly increases in contributions and retirement ages, and steady consolidation of regional services.

Scenario D shows up as a falling labour share, rising pension contributions and taxes on labour, weakening household consumption despite growth in output, and rising debt-service costs.

Section 11 lists the indicators. Reading them together each year is more useful than any single forecast.

3. Subtheme One: how a shrinking Core reaches money

The first subtheme traces the financial channel. Demography is slow; the prices it moves are not.

Pensions: the contribution wedge

Pay-as-you-go pension systems transfer income from today's workers to today's retirees. When the ratio between them changes, one of three things has to move: contributions, benefits or the retirement age.

Germany shows the first lever in action. The contribution rate of 18.6% has been stable since 2018 because the large baby-boom cohorts were still working. As they retire, the insurer's reserves run down and the rate has to rise: to 19.9% in 2028 and around 20% in 2029, by its own projection. Across the OECD, public spending on pensions and health is projected to rise by about 3% of GDP by 2060 (projected, OECD). McKinsey Global Institute estimates that in advanced economies and China, retirement systems may need to channel as much as half of labour income to close the gap between what seniors consume and what they earn (projected, MGI 2025).

Higher contributions raise the cost of employing people and lower take-home pay at the same time. In an economy trying to keep well-paid workers at home, that is a direct conflict. It is the clearest example of how a shrinking Core makes it more expensive to sustain the Core.

Interest rates: the regime question

For two decades, the dominant view was that ageing pushes interest rates down. Older societies save more and invest less, and Japan's long period of near-zero rates seemed to prove it. Larry Summers's secular stagnation thesis rested partly on this logic.

Charles Goodhart and Manoj Pradhan argued the opposite in 2020: once the global supply of labour stops growing, workers regain bargaining power, wages and inflation rise, and retirees start drawing down savings rather than adding to them. Rates would trend higher.

Japan's ten-year yield at about 3%, the highest in roughly three decades, does not settle the debate. Fiscal concerns, Bank of Japan policy and global yields all play a part. But it is at least consistent with the second view, in the economy that was the main evidence for the first. Russia's experience points the same way: with unemployment around 2%, wages rise faster than productivity and the central bank cites labour scarcity as a source of inflation.

The regime matters for every reader of this series. Higher real rates raise the cost of mortgages, government debt and long-term investment; they lower the present value of long-dated assets such as property and growth stocks; and they reward savers. A household, firm or portfolio built on the assumption that the low rates of the 2010s will return is exposed if they do not.

Housing: where rates and demographics meet

Housing is where the financial channel reaches most households directly. Two forces now push on it at once. The first is demographic: the BIS economist Előd Takáts estimated that ageing would subtract about 80 basis points a year from real house prices in the United States over the coming decades, compared with neutral demographics, and considerably more in Europe and Japan (projected, BIS). The second is the rate regime: higher mortgage rates reduce what buyers can pay.

Tokyo showed the combination in 2026. Second-hand condominium prices fell in August for the first time in 28 months, with prices in the central wards down for four months in a row (measured, Tokyo Kantei). The trigger was rising mortgage rates. The background is a capital whose population is projected to peak around 2030, in a country with about 9 million vacant homes. Rates move first; demographics decide how far prices recover afterwards.

For households whose main asset is property, this means that the retirement cushion previous generations relied on cannot be assumed. Location matters more than ever: prime districts with durable demand will hold value; peripheral districts in fast-ageing countries may not.

Public debt: the slow squeeze

Ageing raises public spending on pensions, health and long-term care while slowing the growth of the tax base. Higher interest rates raise the cost of servicing existing debt at the same time. Each force is manageable on its own. Together they compound, which is why the series' learnings emphasise analysing demographic and fiscal factors as interacting rather than in isolation.

The resolution, in most ageing economies, will not be a crisis but a sequence of incremental adjustments: higher contributions, later retirement, slower indexation of benefits, higher taxes on consumption and property, and, where possible, faster growth. A disorderly resolution is possible in economies with high debt, weak growth and political resistance to reform. We hold it as a tail risk, not a base case.

4. Subtheme Two: the participation lever and its limits

The second subtheme examines the most obvious response to a shrinking workforce: getting more of the population into work.

The lever is real

The EU's employment rate for people aged 20 to 64 rose to 76.1% in 2025, a record, and 115 of the EU's 244 regions already meet the 2030 target of 78% (measured, Eurostat). Japan has 9.43 million workers aged 65 and over, 13.8% of everyone employed, and their number has risen for 22 consecutive years (measured, MIC). Germany is raising its statutory retirement age to 67. Women's participation in Korea, Japan and southern Europe still has room to rise.

Each of these adds to Core size. MGI lists "more work per person" as one of four ways ageing economies can sustain living standards, alongside higher productivity, effective migration and higher fertility.

The arithmetic of its limits

A simple calculation shows how far the lever can go. Germany's working-age population is projected to shrink by between 3.2 and 6.2 million by 2035. Assume, generously, that participation and hours could be raised enough to add the equivalent of 3 percentage points to the employment rate of a working-age population of about 46 to 48 million. That adds roughly 1.4 million workers (derived). Even in the more favourable migration scenario, that offsets less than half of the projected decline. In the less favourable one, about a quarter.

Participation can slow the shrinking of the Core. It cannot reverse it. The rest has to come from output per worker and from migration that converts quickly into employment.

The quality problem

There is a second limit. Extending working lives and raising participation adds people to the Core, but not always productive people. In Japan, about three quarters of older workers who are not executives hold non-regular jobs, often low-paid and low-productivity (measured, MIC). A Core that grows by adding part-time, low-paid roles gains in size but not in capacity or tax contribution.

The lesson is the same as in Article 2: what matters is not the number of people in work but the number in productive, well-paid work. Policies that raise participation work best when they are combined with training, automation that supports older and less experienced workers, and roles designed around what they do well.

Productivity: the lever that has to do the most

If participation can offset a quarter to a half of the decline in Germany's working-age population, and migration converts too slowly to close the rest within a decade, then output per worker has to carry the remainder. That is why the series keeps returning to the same production model: more capital, automation and AI behind each worker, applied in ways that raise pay rather than only cut staff.

The required pace is not extreme. Article 1 showed that if the number of workers falls by 0.6–1.1% a year, real wages per worker need to rise by at least as much simply to keep the labour-income base from shrinking (derived). Output per hour in advanced economies has often grown by 1–2% a year in good decades. The question is whether ageing economies can sustain the upper end of that range while their workforces age, and whether the gains reach wages.

Migration as the bridge

Migration is the only lever that can add working-age people quickly. Japan's foreign workforce grew by 11.7% to 2.57 million in a year. Germany issued 11,497 Opportunity Card visas in the first year of the scheme, against an estimated need for hundreds of thousands of working-age arrivals a year. Article 2's calculator showed why speed matters more than volume: a newcomer who finds work within two years adds to public finances; one who takes six years is a cost for more than a decade.

5. What Most Analysis Gets Wrong

Single-number forecasts

Long-range forecasts are usually presented as single paths: GDP growth of X, a dependency ratio of Y. The more useful form is a set of scenarios with explicit probabilities and signposts, so that a reader can see which path is unfolding and adjust. The future of the Economic Core depends on two open questions; any forecast that does not name them is hiding its assumptions.

Extrapolating the last decade

The 2010s combined low interest rates, cheap imports from China, abundant global labour and large baby-boom cohorts at peak earning age. Much household, corporate and investment planning still assumes those conditions. Every one of them has changed.

Treating 2040 as distant

Fourteen years is less than the length of a typical mortgage, a career stage, or the life of a factory. Decisions taken now about property, skills, plant location and pensions will play out in the conditions of 2035–2040. Many demographic facts about that period are already fixed.

Counting GDP instead of the Core

A country's GDP can grow while its median household gets poorer, as the falling US labour share shows. A country's GDP can stagnate while living standards rise, as Japan's rising output per worker shows. The relevant measures are the size, productivity and capture of the Core.

Treating forces in isolation

Ageing, fiscal pressure, rates, AI and trade fragmentation are usually analysed separately. They interact. Higher pension contributions raise labour costs, which accelerates automation, which raises the capital share, which weakens consumption, which lowers tax revenue, which increases pressure on contributions. Most damage in ageing economies comes from these loops, not from any single force.

Confusing protection with adaptation

As economic-security policies spread, it becomes easy to read every new subsidy, local-content rule or investment screen as adaptation. Many are. Some are protection of existing structures that will not raise productivity. The difference shows up in output per worker and wages, not in the number of plants announced. Article 2 described the cases of Intel's cancelled fab in Magdeburg and Northvolt's bankruptcy; they are reminders that announcing a strategic project is not the same as building a productive one.

Where this view sits among other researchers

6. Base / Stress / Extreme

The scenarios cover the rich ageing economies and China to 2036. They correspond to the scenario space in Section 2 and sum to 100.

Base: Two-speed adaptation (55%). Corresponds to scenarios A and C. Ageing economies adapt unevenly. Automation and AI raise output per worker; real wages rise modestly in labour-scarce sectors; pension contributions and retirement ages rise in steps; regional services contract in an orderly way; capitals hold their value while peripheral regions decline. Some countries move toward the Productive Citizen Economy; most manage a slow decline in total output with stable or rising output per person.

Falsifier: real median wages fall in cumulative terms over any five-year period to 2031 in both Germany and Japan.

Stress: Fiscal squeeze (30%). Corresponds to scenario D and parts of B. AI gains concentrate with capital; the labour share falls further; pension and health costs force repeated tax rises on a shrinking workforce; higher interest rates raise the cost of public debt; domestic demand weakens; peripheral property becomes illiquid. Output grows in capitals and strategic sectors while median incomes stagnate.

Falsifier: labour shares in Germany, Japan and the United States all rise by 2 points or more between 2026 and 2031.

Extreme: Disorderly break (15%). The tail of scenario D. A major ageing economy faces a bond-market or pension-funding crisis in which demographic costs are central, forcing abrupt benefit cuts or tax rises; or an AI investment bust coincides with trade fragmentation, producing a sharp global slowdown. Asset prices tied to domestic demand reprice abruptly.

Falsifier: ten-year government bond yields in Japan, Germany, Italy and the United States all remain below nominal GDP growth throughout 2027–2031.

7. Forecast, 1 year (to October 2027)

F1. Japan's ten-year government bond yield is at or above 2.5% on 30 September 2027.

It is about 3% in October 2026, the highest in roughly three decades (reported). The Bank of Japan is normalising policy, wage settlements have been the strongest in more than thirty years, and fiscal pressures from an ageing population are rising.

Probability: 0.75. Confidence: Medium.

Second-order effect: Japanese investors bring more money home, raising yields elsewhere; the cost of servicing Japan's public debt rises.

Weakening condition: a sharp global recession or financial shock that pushes investors into government bonds, or a reversal of Bank of Japan policy.

What the next year looks like. Expect record labour-shortage readings in Japanese and German business surveys; further rises in employment among people over 65; more consolidation of water, sewer and transport operators in Japan and Korea; further industrial job losses in Germany alongside rising automation investment; continued double-digit growth in Japan's foreign workforce; and active debate over the EU's Industrial Accelerator Act.

8. Forecast, 3 years (to 2029)

F2. Germany's statutory pension contribution rate for 2029 is set at 19.9% or higher.

It is 18.6% today. The statutory insurer projects 19.9% in 2028 and around 20% in 2029 as reserves fall (reported, DRV). The baby-boom cohorts born in the early 1960s reach retirement age during this period.

Probability: 0.75. Confidence: Medium-High.

Second-order effect: higher non-wage labour costs strengthen the case for automation and weaken take-home pay, intensifying the conflict between sustaining pensions and keeping well-paid jobs at home.

Weakening condition: a large increase in the federal subsidy to the pension system, or a decision to fund part of the gap through general taxation instead.

What 2029–2030 looks like. By 2030, labour scarcity becomes the binding constraint for firms in Japan, Korea, Germany and Italy, and increasingly in China. Directional views for this horizon:

9. Forecast, 5 years (to 2031)

F3. Eurostat reports the EU employment rate for people aged 20–64 at 78.0% or higher for 2030.

It was 76.1% in 2025, a record (measured). Reaching the target requires about 0.4 points a year of improvement (derived), slightly faster than the most recent annual gain. Participation among older workers and women is still rising; the ageing of the working-age group itself pulls the rate down.

Probability: 0.35. Confidence: Medium.

Second-order effect: if the target is missed, as we expect, pressure will grow to raise retirement ages faster and to expand selective migration.

Weakening condition: a strong labour-market cycle in southern Europe, or rapid integration of recent migrants into work.

This forecast is written against the official target. Its purpose is to test whether the participation lever, discussed in Section 4, is as strong as policy assumes.

What 2031–2035 looks like. The fiscal and pension consequences move to the centre of politics. A quarter of Germans are 67 or older. China's large 1960s cohorts are fully retired. Directional views:

10. Forecast, 10 years (to 2036)

F4. Japan's Ministry of Internal Affairs and Communications estimates the total population on 1 October 2035 at below 117.0 million.

It was 123.8 million on 1 October 2024 (measured). Natural decline, the gap between deaths and births, is widening as the large post-war generations age, while the number of foreign residents is rising quickly. An average fall of about 0.65 million a year would bring the total to about 116.6 million by 2035 (derived).

Probability: 0.55. Confidence: Medium-Low.

Second-order effect: the forecast tests whether migration can materially slow Japan's population decline; if the total stays above 117 million, it will be because foreign residents are arriving faster than expected.

Weakening condition: a sustained rise in foreign residents well above recent trends, or a rise in births.

What 2036–2040 looks like. By 2040 the scenario differences have compounded. Japan is about 35% aged 65 and over. Korea's working-age population is approaching 27 million. Seniors account for a steadily rising share of consumption, on the way to a quarter of global consumption by 2050 (projected, MGI). Directional views:

11. Signals to Watch

These seven indicators, taken together, show which scenario is unfolding. They are the series' dashboard.

1. Working-age population change in Germany, Japan, Korea and China. The base rate for everything else.

2. Real wages against productivity in Japan and Germany. Rising together means scenario A or C; wages lagging means C or D.

3. Labour share of income in the United States, Germany and Japan. The single best measure of whether AI gains reach the Core.

4. Pension contribution rates and retirement-age decisions. The visible price of a shrinking Core.

5. Ten-year government bond yields against nominal GDP growth in Japan, Germany, Italy and the United States. The rate regime and the fiscal-risk gauge.

6. Employment rates and migrant conversion. Eurostat's 20–64 employment rate; the migrant–native employment gap in Germany; Japan's foreign workforce.

7. Regional divergence. Property prices, vacancy and service closures in capitals against peripheral regions.

12. Recommendations, Individuals

The logic behind every recommendation is the same: position yourself on the side of scarcity. In an ageing economy, skilled people, working infrastructure, productive capital and young customers become scarce. Routine labour, peripheral housing and assets that depend on a continuous inflow of young buyers become abundant.

Career and skills.

—   Within 6 months, map your current work against two questions: does demand for it grow as the population ages, and can AI multiply your output rather than replace it? Roles that score well on both, including engineering, skilled trades with diagnostic content, health care, care coordination, maintenance of physical systems, and financial and legal advice for older clients, carry a scarcity premium through 2040.

—   Within 12 months, become fluent in the AI tools of your field, and learn to check and correct their output. The person who knows when the tool is wrong is the hardest to replace.

—   Over 2026–2030, add one physical-world or regulated skill to a knowledge career where possible: inspection, energy systems, industrial automation, clinical coordination. Infrastructure in Japan is already being repaired too slowly for lack of technicians.

—   Plan for a longer working life by choice. Invest in health and in skills that will still be valued in your late sixties. The difference between well-paid and low-paid work at 67 is decided by the skills you hold at 55.

Location and housing.

—   Before any purchase, check the 20-year outlook of the specific district: share of residents aged 20–39, school enrolment, vacancy rates, municipal finances. A city average hides the divergence between its core and its edges.

—   Stress-test mortgages for higher rates. Japan's yields have doubled in a year. Plan for a rate environment closer to the 2000s than the 2010s.

—   Do not treat peripheral property in a fast-ageing country as a pension. If you expect to inherit property in a declining area, decide within a year of inheriting whether to sell, rent or demolish.

Savings and retirement.

—   Assume public pensions will be less generous in real terms and start later than current rules suggest, and that contributions will rise while you are working. Build private savings on that basis.

—   Diversify away from a single home-country housing bet, especially in fast-ageing countries.

—   Hold plans that work in both rate regimes. A higher-rate world rewards savers and penalises borrowers; a lower-rate world does the reverse.

Family.

—   Discuss care and inheritance early. Fewer children per family means more wealth concentrated in fewer heirs, and more care responsibility on each.

Avoid. Long mortgages on homes in shrinking districts; careers built on routine, remote tasks easily priced against global labour or AI; retirement plans that depend entirely on current pension rules.

Why. The Core is shrinking and the market is beginning to price scarcity. People on the scarce side gain bargaining power. People whose assets or skills depend on a continuous inflow of young buyers lose it.

13. Recommendations, Business

Market and product.

—   This quarter, re-segment your market by age cohort and household type rather than total population, and size each segment to 2030 and 2035 using official projections.

—   Within 12 months, identify revenue that depends on new household formation: first homes, family cars, children's goods, entry-level furnishing. In fast-ageing markets, plan for it to shrink, and move capacity toward the segments that grow: adaptive products, care, maintenance and services for older, wealthier households.

—   Shift from counting customers to deepening value per customer, through service contracts, maintenance and subscriptions.

—   Classify each market by world (Article 3) and stop using a single global playbook.

Workforce.

—   Treat labour as the scarcest input. Budget for rising wages and for higher non-wage costs: German pension contributions alone are projected to rise by 1.3 points of gross pay by 2028.

—   Within 6 months, launch at least one AI or automation programme designed to raise output per employee and pay, not only to cut headcount. In labour-scarce markets the people you cannot replace are the ones who make automation work.

—   Retain experienced older staff through flexible roles; design jobs around what they do well.

—   Recruit internationally with an integration plan: qualification recognition, job-linked language training, help with housing. Time to full productivity is the real cost driver.

Production and supply chain.

—   Within two quarters, classify every major input as location-irrelevant, strategic or domestic service, and price a second source for strategic inputs with single-country concentration above 70%.

—   Re-evaluate location using total cost, including trade-policy risk, loss of engineering know-how and distance from customers. Where automation reduces labour below roughly 15–20% of production cost, low-wage locations lose much of their advantage.

—   Locate inside supplier networks, not in isolation. A single automated plant without suppliers is fragile.

Finance and ownership.

—   Refinance and plan capital spending for higher rates. Cheap money was a feature of the last decade, not a law of nature.

—   If you own a small or mid-sized firm, plan succession now. Across ageing Europe and Japan, profitable firms close because owners retire without successors. Documented processes and automated operations make a firm easier to sell.

Avoid. Five-year plans built on population totals or GDP; automation justified only by headcount cuts; business cases that depend on subsidies or origin rules continuing indefinitely; single-country dependence for strategic inputs.

Why. Your customers, employees and suppliers are drawn from the same shrinking Core, and the cost of employing people is rising. Firms that combine automation with well-paid skilled staff, resilient supply chains and products for the growing segments fit the next fifteen years.

14. Recommendations, Capital

These are themes for research and questions for your advisers, not investment advice.

—   Within 6 months, stress-test portfolios for both rate regimes, and in particular for a world of higher real rates, as Japan's bond market suggests is possible. Review concentration in AI-related equities against the IMF's warning of a possible correction.

—   Research areas where scarcity is a structural tailwind: automation and AI for physical industries; infrastructure inspection and renewal tools; health, care, senior housing and home adaptation, where demand is set by cohorts already born; wealth-management, inheritance and trust services, as the largest intergenerational transfer in history concentrates in fewer heirs.

—   Map exposure by world rather than region. World I rewards automation and services to older affluent households; World III rewards whatever turns young workers into earners; World II is the highest-variance group.

—   Treat real estate as geography, not as an asset class: prime metros with durable demand drivers on one side; peripheral residential in fast-ageing countries on the other.

—   Distinguish productivity from protection. Companies that benefit from strategic-openness policy because they are productive compound; those that benefit only because they are protected depend on policy continuity.

—   Look at young-population growth markets, India first, with attention to income per head, jobs and competition from Chinese producers.

Avoid. Assuming the low-rate environment of 2010–2020 returns by default; one-directional property bets outside strong metros in ageing countries; exporters whose main buyer markets are ageing faster than they are; concentrated exposure to any single subsidised flagship project.

Why. Capital is abundant; skilled people, working infrastructure and young customers are scarce. Returns follow scarcity, and the cost of capital itself may be rising.

A note for regional decision-makers

—   Measure the Economic Core, not only population: the number of residents who work, earn above the median and pay net taxes.

—   Plan infrastructure for the population you will have, and consolidate networks while engineers and budgets still exist, rather than after failures.

—   Tie industrial support to productivity and wages, with performance targets and sunset clauses.

—   Run migration as a conversion system, measured by time to self-sufficiency.

—   Lower the cost of starting and transferring firms, to counter the entrepreneurship drag that ageing creates.

15. What Would Change Our Mind

A broad productivity surge that reaches wages. If output per hour in Japan and Germany grows above 2% a year for three consecutive years with real median wages keeping pace, and labour shares stabilise, scenario A would gain weight at the expense of C and D.

A return of low rates. If Japan's ten-year yield falls back below 1% and stays there with inflation near target, the Goodhart–Pradhan view would be weakened and the cost-of-capital concerns in this article overstated.

Participation surprises. If the EU reaches its 78% employment target by 2030 and productivity holds, the participation lever would be stronger than the arithmetic in Section 4 suggests.

A fertility rebound. A sustained rise in fertility toward 1.4–1.5 in Korea, Japan or China would not change the 2030s but would change the 2040s and the logic of long-term investment.

Fast migrant conversion. If Germany's migrant–native employment gap closes below 5 points within five years, migration would be restoring the Core rather than only the headcount.

Founder's Lens. [Reserved for Stanislav Zhukov. One paragraph, written by hand. This section is non-delegable and is completed before publication.]

16. Bottom Line

Most of the demographic path to 2040 is already written: fewer working-age people in every rich economy and in China, more retirees, higher pension costs, and regional decline where density falls. What remains open is how that smaller workforce is equipped and paid, and the evidence of 2026 shows both outcomes in motion: interest rates and pension contributions rising, the worker share of output falling, employment rates at records and still short of what is needed. The decisive variables are whether AI gains reach wages and whether economies adapt how they produce. The scarcities of the next fifteen years are skilled people, working infrastructure and young customers; the advantage goes to those who position on the scarce side early and calmly, and to the countries that turn fewer people into better-equipped, better-paid ones.

Forecast record

Forecasts entered in this article, in resolvable form. Each has a threshold, a named verifier and a resolution date, so it can be scored.

Correlation note: F1 and F2 share a driver, the rising cost of sustaining an ageing population, and are mildly positively correlated through inflation and wages. F3 depends on European labour markets and is largely independent of F1 and F4. F4 depends on Japanese mortality, births and migration and is independent of the others. Entry into the public Ledger is a founder decision.

Sources and epistemic class

Every figure carries its class: measured (reported by the statistical body), projected (an official body's projection), reported (secondary source reporting primary data or analysis), derived (our calculation from cited figures), analytical (argument, not data).

Series I · The Shrinking Core

1. The Wrong Denominator — why headcount no longer measures an economy

2. Globalise Goods, Select People, Protect Capabilities — the Productive Citizen Economy and its limits

3. Same Machines, Different Futures — how AI will split twelve economies

4. 2030, 2035, 2040 — forecasts and a playbook for the shrinking Economic Core (this article)

THRIVE IN CHAOS  ·  Analysis → Forecast → Recommendations  ·  Signal Over Noise  ·  thriveinchaos.ai

AI intelligence system with human editorial oversight. This article is analysis, not investment, legal or fin