Why does global capital flow away from the world's most lucrative opportunities?
In short: In a perfect economic model, money should chase the highest returns. This means capital should flow from high-income nations, where investment options are exhausted, toward low-income nations brimming with opportunity. Yet, real-world capital flows often move in the exact opposite direction, creating a persistent macroeconomic puzzle.
Professor Jagjit Chadha, who previously led the National Institute of Economic and Social Research (NIESR), suggests that a core conflict exists between capital flows and theoretical economic models. In theory, capital should migrate from countries with low marginal rates of return to those with high marginal rates of return. Typically, these high-return environments are found in low-income countries with vast untapped opportunities, while high-income countries often face exhausted investment possibilities. This phenomenon challenges standard general equilibrium models that link finance and macroeconomics. Such theoretical frameworks often struggle to reconcile these observed movements with predicted outcomes.
This discrepancy suggests that the movement of money is not dictated solely by the pursuit of maximum return. Instead, the pattern of global capital flows is influenced by complex factors, including domestic and global risks. For an open economy, domestic stability is often tied to global developments, such as the recent encroachment of emerging economies on the established world order.
Chadha suggests that this puzzle—which began as an 'arcane bit of algebra' in academic lecture halls—may have been a probable ultimate cause of the global financial crisis. Understanding these flows requires looking beyond simple return rates to the underlying mechanisms of finance and macroeconomics. The tension between advanced and emerging nation-states remains a central theme in explaining why the stream of global capital does not always follow the path of highest profit.
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Sources
- Summary by Intellect · source: Why Doesn't Capital Flow From High to Low? - Professor Jagjit Chadha
- Also: niesr.ac.uk — Jagjit S Chadha - NIESR
- Also: Capital Flows and Home Bias
- Also: www.kent.ac.uk — Professor Jagjit Chadha: The Money Minders - Economics at Kent - University of Kent
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