The Global Economy in the Era of Supply Shocks: Resilience, Divergence, and Restructuring

Behind the Growth Slowdown: Supply Shocks Replace Demand Fluctuations

The global economy remains resilient after multiple rounds of shocks, but that resilience is coming under mounting pressure. The latest EY-Parthenon Global Economic Outlook shows that global GDP growth is projected to decline from 3.4% in 2025 to 2.9% in 2026, a downward revision from December 2025's forecast of 3.1%, before rebounding to 3.2% in 2027.

The numbers themselves do not indicate a recession, but they reveal a more noteworthy phenomenon: the operating logic of the global economy is shifting from being driven by demand fluctuations to being driven by overlapping supply shocks. Middle East conflicts, tariff barriers, industrial policy, energy security concerns, demographic constraints, and uneven technology diffusion are jointly raising the cost of growth, reducing the efficiency of resource allocation, and gradually eroding medium-term potential output.

These supply shocks differ from traditional demand contractions—they do not manifest as synchronized, acute downturns, but instead push up costs, disrupt supply chains, and compress corporate profit margins in more subtle ways, while slowly transmitting to consumption and investment through income effects.

A New Equilibrium Under Trade Fragmentation

Although the wave of tariffs once raised fears of a global trade collapse, actual trade activity has shown greater-than-expected resilience. Partial exception arrangements, partial tariff rollbacks, corporate risk-hedging inventory strategies, and supply chain reconfiguration have cushioned the direct impact of the shocks.

However, trade restrictions, export controls, and industrial policy are reshaping investment flows, raising operating costs, and accelerating the regionalization of supply chains, particularly in semiconductors, energy, and critical minerals. This regionalization is not unfolding in a linear manner, but rather oscillating repeatedly between national security and market efficiency.

Globalization has not ended, but it is being redefined. The global supply chains once built on cost optimization are giving way to parallel systems that prioritize resilience, security, and control. Companies are no longer asking only "where is the cheapest place to produce," but "under which institutional framework is it safest to produce." This in itself represents an efficiency discount.

The Return of Inflationary Pressures and the Fragmentation of Central Bank Policy

Another direct consequence of supply shocks is the renewed buildup of inflationary pressures. Energy price volatility, disruptions to commodity shipping, and geopolitical premiums, combined with the pass-through of tariffs to consumer prices, mean that central banks face not a single inflation narrative, but a tug-of-war between "disinflation" and "reflation" forces.

Monetary policy, therefore, no longer follows the old pattern of synchronized easing or synchronized tightening. Different economies are adopting differentiated policy paths based on their own inflation sources, exchange rate pressures, and output gaps. Central banks' "data dependence" is being replaced by "shock dependence"—policy reaction functions have become more sensitive and more difficult to predict.

This policy fragmentation means that global financial conditions lack a unified anchor. Capital flows will more visibly chase real yield differentials and the quality of safe assets, exchange rate volatility will rise, and emerging markets will face greater divergence in external financing conditions.

Regional Divergence: Concentrated Growth Coexisting with Structural Weakness Another notable feature of the global growth slowdown is the pronounced "two-track" divergence across regions.

The U.S. economy remains resilient, but its growth drivers are increasingly concentrated in a few areas: consumption by high-income groups, AI-driven capital expenditure, and the wealth effect created by elevated asset prices. This concentration is itself a vulnerability—once inflation expectations pick up again, or income compression spreads to a broader range of households, growth momentum could face the risk of narrowing rapidly.

The euro area, for its part, faces a more complex situation. Conflicts in the Middle East are suppressing real income growth and undermining consumer and business confidence. Weak external demand is compounded by U.S. tariffs, declining industrial competitiveness, and demographic constraints. German fiscal expansion and higher European defense spending can only provide a partial offset, while AI-related investment remains far weaker than in the United States. This means the euro area may continue to lag behind in long-term productivity growth.

Japan's economic recovery is moderate. Fiscal stimulus, a rebound in domestic demand, and measures to cushion energy costs help stabilize short-term activity, but weak external demand, subdued business confidence, and structural demographic constraints continue to limit growth potential.

Emerging market economies display even greater heterogeneity. Countries dependent on energy imports face greater inflationary and external account pressures, while those with key mineral resources or the capacity to absorb manufacturing relocation may gain new capital inflows and reap dividends from industrial chain restructuring.

AI: A Countervailing Force for Growth and a New Supply-Side Bottleneck

In a context overshadowed by supply shocks, AI-related investment has become one of the few forces capable of significantly lifting productivity expectations. Rising capital expenditure in data centers, semiconductors, and energy infrastructure not only directly supports GDP, but also improves the potential growth rate over the medium term.

Yet the expansion of AI itself is also giving rise to new supply-side bottlenecks. The surge in demand for computing power is driving a sharp increase in electricity consumption, and lagging investment in power infrastructure could lead to regional electricity shortages; the concentrated production of advanced-node chips makes geopolitical risk more acute; and constraints such as cooling water resources and critical metals supply chains are also surfacing.

In other words, AI is both a tool for coping with supply shocks and becoming a source of the next round of supply constraints. Economic agents need to make finer trade-offs between opportunities and bottlenecks.

Repricing of Risks and Opportunities

The risk structure facing the global economy over the next two years remains asymmetric.

Downside risks stem mainly from further escalation of geopolitical conflicts. If tensions in the Middle East or other critical regions expand, energy prices will spike more violently, financial conditions will tighten more quickly, and global growth could fall below the current forecast range. If a new wave of retaliatory tariffs erupts in trade, business confidence will suffer a second blow.

Upside risks, meanwhile, lie in unexpected breakthroughs on the productivity front. If AI delivers efficiency gains beyond expectations across a broader range of services and manufacturing, and if the policy environment provides supporting energy, education, and labor transition measures, global growth could surpass the 3.2% baseline scenario in 2027.For enterprises and investors, the key lies no longer in viewing a "rebound" as an automatic return to the cycle, but rather in treating "adapting to supply shocks" as a long-term strategic capability. This means that supply chain design needs to balance cost, security, and carbon constraints simultaneously; capital allocation needs to factor in geopolitical considerations; pricing strategies need to reflect input costs and exchange rate movements more flexibly; and balance sheets need to build buffers for more frequent relative price shocks.

The global economy is entering a new paradigm of "layered shocks." In this paradigm, resilience is not the ability to return to normalcy, but the ability to redefine normalcy amid a sustained state of disequilibrium.