Sony Kapoor on Capital Misallocation, Demographics, and the Case for a Great Global Rebalancing
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In Episode 436 of Hidden Forces, Demetri Kofinas speaks with the influential economist, policy entrepreneur, and investor Sony Kapoor about why developed world demographics, debt, and political sclerosis will crush forward returns for investors who fail to rebalance their portfolios for the new investment paradigm.
Kapoor and Kofinas spend the first hour of their conversation unpacking the thesis explored by Sony in two of his papers: “Winter Is Coming” and “The Case for a Great Rebalancing” in which he argues that global capital has been increasingly misallocated due to factors such as the growth of passive indexation, maladaptive benchmarking, and an excessive focus on short-term performance at the expense of long-term returns.
They explore how demographic tailwinds in advanced economies have flipped into headwinds; whether AI driven productivity gains can realistically offset the drag of declining birth rates; why accommodative post GFC monetary and fiscal policies undermined political stability in developed countries; and what recent stresses—including dollar weakness, Treasury market liquidity scares, and an increased reliance on short-term debt financing—suggest about looming financial repression, fiscal dominance, and a rotation out of U.S. capital markets.
The second hour is devoted to a conversation about investor incentives, market structure, investment opportunities in emerging markets, and how to construct a more diversified portfolio suitable for the world that is coming into being. Demetri and Sony discuss why political and currency risks may now be lower for a diversified emerging markets basket than for a similarly diversified portfolio of developed market assets.
Finally, they discuss what a re-weighting toward emerging markets could look like; why India stands out given its digital public rails and domestic-demand engine; how places like Indonesia, Brazil, and Nigeria fit into a rebalancing; and how to think about geopolitics, US policy risk, and portfolio construction in this new paradigm.
The Great Global Rebalancing is Picking Up Speed and Should be Celebrated
This article below summarises the long podcast interview, which was conducted on the 18th of August, 2025
For more than a decade, the influential economist and policy expert Sony Kapoor has argued that global capital markets are fundamentally misaligned with economic reality. In 2016, his paper Winter Is Coming warned that institutional capital had drifted dangerously far from real, productive investment. In 2024, he followed it with The Case for the Great Rebalancing, arguing that a dramatic rotation of capital is no longer optional — it is inevitable.
In a wide-ranging conversation with Hidden Forces, Kapoor laid out why demographics, debt, institutional incentives, and political dysfunction have pushed developed markets to an inflection point — and why emerging economies now represent not just a moral imperative, but the strongest long-term investment opportunity of our time.
From Financial Insider to System Critic
Kapoor’s career path defies easy categorisation. Trained as an engineer at one of India’s elite IITs, he began his professional life in investment banking, working in leveraged finance and derivatives at Lehman Brothers. The experience left him deeply disillusioned.
“What is well paid,” Kapoor recalls concluding early on, “is often neither very interesting nor very important. And some of the most important things in the world are not very well paid at all.”
That realisation pushed him toward what is now fashionably called a “portfolio career.” He works part-time in paid advisory roles — with governments, sovereign wealth funds, and pension systems — while devoting the bulk of his time to policy, research, and pro bono work. Over the years, he has advised roughly twenty governments, worked with major development institutions, and led one of Europe’s most influential think tanks.
What distinguishes Kapoor is not just the breadth of his experience, but the direction of his intellectual journey. Where many professionals narrow their focus with age, Kapoor has moved in the opposite direction — away from pure quantitative models and toward a more holistic understanding of economics, politics, culture, and human behaviour.
“The older I get,” he says, “the less certain I am — and the more I appreciate nuance, uncertainty, and shades of grey.”
The Core Diagnosis: Capital Has Lost Touch with Reality
The central thesis of Winter Is Coming is simple but unsettling: global capital allocation has become detached from real economic opportunity.
Financial markets, Kapoor argues, still operate on assumptions forged in the post–World War II “golden age” of developed economies — a period defined by favourable demographics, rapid productivity growth, and expanding capital stock. By the late 1990s, those tailwinds had largely dissipated. Yet capital flows never adjusted.
Had markets tracked economic fundamentals, Kapoor believes a major rebalancing away from rich economies and toward emerging markets should have begun around the year 2000. Instead, successive bubbles — the dot-com boom, the housing bubble, and then the post-crisis asset boom — repeatedly pulled capital back into the same developed-market assets.
The irony is hard to miss. The United States, which exported the 2008 financial crisis to the rest of the world, emerged as the crisis’s biggest beneficiary. Aggressive fiscal stimulus and ultra-loose monetary policy attracted even more global capital, inflating asset prices and reinforcing the very distortions that caused the crash.
Every time economic logic pointed toward rebalancing, another shock intervened. COVID was the most extreme example: rich countries unleashed unprecedented stimulus, driving asset prices to new highs just as productive investment opportunities were drying up.
By 2025, Kapoor argues, global capital markets are further from equilibrium than at any point in living memory.
“First Slowly, Then Suddenly”
Kapoor believes the rebalancing is no longer theoretical. It has begun.
Since Donald Trump’s return to the political centre stage, global investors have witnessed sudden liquidity stresses in U.S. Treasury markets, sharp dollar volatility, and growing unease among foreign holders of American assets. For years, international investors poured money into U.S. equities unhedged — an extraordinary departure from standard risk management — because they benefited from both strong returns and a rising dollar.
That dynamic is now reversing. Once investors begin to doubt dollar strength, they either reduce exposure or hedge. Hedging itself accelerates dollar depreciation, reinforcing the cycle. Markets move slowly at first, Kapoor notes, but exits tend to be rapid once momentum turns.
“I’ve been wrong on timing before,” he admits. “But I’ve never felt as confident as I do now that this process has begun.”
Demographics: The Unavoidable Headwind
Among the structural forces driving this shift, demographics loom largest.
In the decades following World War II, more than half of GDP growth in developed economies came simply from having more workers. Productivity gains did the rest. That demographic tailwind is gone.
In the United States, workforce growth is near zero and set to turn negative. In Japan, Germany, Italy, and South Korea, it already has. Kapoor estimates that declining demographics reduce potential annual GDP growth in developed economies by 1 to 1.5 percentage points — every year.
No developed country has found a reliable way to reverse falling birth rates. Even generous family policies have failed. South Korea’s fertility rate has collapsed to around 0.7 children per woman. Japan now sells more adult diapers than baby diapers.
These trends don’t just slow growth; they also worsen debt dynamics, pushing debt-to-GDP ratios higher and straining public finances over time.
Can AI Save the Day?
Optimists argue that artificial intelligence will offset demographic decline by supercharging productivity. Kapoor is more cautious.
He does not deny AI’s transformative potential. Like railways, electricity, and the internet before it, AI will reshape the real economy. But history suggests that such transformations rarely translate into outsized financial returns for investors who buy at peak valuations.
“There’s likely to be massive overinvestment,” he says — infrastructure that proves enormously useful in hindsight, but disappointing for those who funded it. Fiber-optic cables laid during the dot-com boom still power today’s internet, even though many investors were wiped out.
AI, Kapoor argues, is an extraordinary tool — but not intelligence in the human sense. These systems are probabilistic models trained on finite data. Once high-quality human-generated data is exhausted, gains diminish. AI may soften the demographic headwind or spread it over a longer period, but it cannot eliminate it.
Sovereign Debt: The Bill Comes Due
Debt was already a concern in 2016. Today, it is central.
After the global financial crisis, sovereign debt exploded — but servicing costs collapsed thanks to quantitative easing and near-zero interest rates. That removed political pressure to address deficits. COVID then supercharged the process, sending debt and asset prices soaring together.
That era has ended. Inflation has returned, interest rates have risen, and investors are increasingly reluctant to hold long-dated government bonds. Debt-servicing costs now consume a larger share of GDP than at any point in recent history.
Kapoor believes governments face an increasingly narrow set of options: higher rates, fiscal austerity, or financial repression. History suggests repression — forcing domestic capital to absorb government debt — is the most likely outcome.
“The stars of yesterday eventually decline,” he notes. “The countries that were forced into discipline often recover strongest.”
Institutional Incentives and the Failure of Capitalism
If the economic case for rebalancing is so strong, why hasn’t it happened already?
Kapoor points to institutional incentives. For pension fund managers and CIOs, career risk dominates decision-making. No one gets fired for being overweight the S&P 500. Deviate meaningfully from the index, and one bad year can end your career.
This has produced what Kapoor calls “fatal attractors”: market-cap-weighted indices that pull ever more capital into the same assets simply because they are already large. Even active managers, in practice, allocate the majority of capital in line with indices.
The result is a breakdown in price discovery. Today, the vast majority of market transactions are driven by automation — index flows, high-frequency trading, rebalancing, and hedging — rather than informed judgments about underlying value. Short sellers, once a critical check on excess, have largely been driven out.
Markets are supposed to be information-processing systems. When that function fails, fragility explodes.
A Moral and Economic Absurdity
The consequences of this misallocation are staggering.
Nigeria — projected to have more than 300 million people by mid-century — has less power-generation capacity than the city of Austin, Texas. Entire countries experience nationwide blackouts, while trillions of dollars chase marginal gains in already-rich markets.
This is not just unjust, Kapoor argues. It is economically irrational.
Globally, there is no demographic shortage. South Asia and sub-Saharan Africa are adding 25–30 million workers to the labour force every year. But without capital, most will never reach their productive potential.
“It’s a crime against economics,” Kapoor says. “Against capitalism. And against humanity.”
Political Risk: The Narrative Has Flipped
Political risk has long been used to justify underinvestment in emerging markets. Kapoor believes this narrative is now backward.
Developed economies are deeply interconnected and face shared challenges: aging populations, high debt, and rising political polarisation. Political shocks transmit instantly across the developed world.
Emerging markets, by contrast, are more diverse and less correlated. While individual countries may carry higher idiosyncratic risk, a diversified emerging-market portfolio today carries less political and currency risk than a developed-market portfolio.
Since the global financial crisis, emerging-market central banks and governments have, on average, demonstrated greater fiscal and monetary discipline than their developed-world counterparts.
“What was once considered risky,” Kapoor says, “is now prudent — and vice versa.”
Why India Stands Out
Among emerging markets, Kapoor believes India is uniquely positioned.
India has always run a current-account deficit, making it less dependent on global cycles. Growth is increasingly driven by domestic consumption and investment. Over the past two decades, the country has built world-leading digital public infrastructure — payments, banking, taxation — at astonishing speed.
There is now so much embedded momentum that Kapoor believes India could sustain 5–6% growth even if policy progress stalled. Unlike China, whose growth was driven by a state-dominated capital model, India’s next phase is likely to translate more directly into corporate profitability and market returns.
The Coming Rotation
Kapoor does not argue that the United States is doomed. On the contrary, he remains long-term bullish on America’s underlying strengths: geography, resources, entrepreneurial culture, and human capital.
But stock and flow are different things. Even if the U.S. gets its policy house in order, the marginal dollar of global capital, Kapoor argues, is far better deployed in economies with low capital stock, young demographics, and enormous unmet needs.
The great rebalancing, in his view, is not an ideological project. It is a matter of arithmetic.
And arithmetic, eventually, wins.
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