The New Economics of Fragility: Chokepoints and Systemic Risk

The modern global economy presents itself as a system of extraordinary strength—fast, efficient, and deeply interconnected. Goods move across continents with precision. Capital flows seamlessly. Production is optimized to the smallest component. Yet beneath this apparent robustness lies a structural weakness that is becoming harder to ignore: the system is increasingly defined by chokepoints—narrow physical, industrial, and financial nodes whose disruption can trigger outsized global consequences.

This is the central argument advanced by Nobel laureate economist Michael Spence in a recent Project Syndicate commentary, where he examines how decades of efficiency-driven globalization have quietly produced a more fragile economic architecture. Spence, who won the Nobel Prize in 2001 for his work on market signaling and has since advised governments and institutions on global growth, frames the issue bluntly: the proliferation of “single points of failure” is not accidental—it is the logical outcome of how modern markets are structured.

The most visible of these chokepoints are geographic.

The Strait of Hormuz, through which roughly one-fifth of global oil supply passes, has once again demonstrated how a localized disruption can cascade into global price shocks, supply uncertainty, and geopolitical tension. But Hormuz is only one example in a broader network of critical passages. The Strait of Malacca connects the Indian and Pacific Oceans and underpins Asia’s role as the world’s manufacturing hub. The Suez and Panama Canals function as compression points for global trade, reducing transit times but simultaneously concentrating risk. As past disruptions have shown, even short-lived blockages can reverberate through supply chains for months, not because of their duration, but because of the system’s lack of slack.

What ties these chokepoints together is not just geography, but dependence. Modern trade is not simply global—it is highly concentrated. Countries and firms do not just rely on international exchange; they rely on specific routes, specific suppliers, and specific systems. This creates a form of exposure that is qualitatively different from traditional trade risk. It is not easily diversified in real time. When disruption occurs, substitution is slow, costly, or in some cases impossible.

Beyond physical routes, the same pattern appears in industrial supply chains. Modern manufacturing is built on layers of specialization, often involving components produced by a handful of suppliers. The 2011 earthquake and tsunami in Japan exposed how such concentration can ripple across industries, as shortages of relatively small but critical components forced a contraction in global automotive production. In response, firms invested in diversification and visibility. Yet, as Spence notes, the underlying incentive structure has not fundamentally changed. Efficiency remains the dominant objective, and resilience remains underprovided.

Nowhere is this tension more consequential than in semiconductors. The production of advanced chips is concentrated in a remarkably small number of actors: a single Dutch company, ASML, supplies the machines necessary for cutting-edge fabrication, while Taiwan’s TSMC and South Korea’s Samsung dominate manufacturing at the technological frontier. This concentration reflects decades of accumulated expertise and capital investment, but it also creates a critical bottleneck for the global economy. Semiconductors are not just another input; they are foundational to artificial intelligence, advanced manufacturing, defense systems, and digital infrastructure.

Efforts to diversify semiconductor production are underway, with the United States, Europe, and China investing heavily in domestic capabilities. Yet diversification comes with trade-offs. The existing system, for all its fragility, is highly efficient. Replicating it across multiple geographies risks higher costs, slower innovation cycles, and potential coordination challenges. The result is a structural tension between resilience and performance—one that is likely to shape the trajectory of technological development in the coming decade.

A similar dynamic is evident in critical raw materials.

Rare earth elements, essential for a wide range of modern technologies, are heavily concentrated in China, which dominates both mining and processing. This creates not just supply risk, but strategic leverage. As recent export controls have demonstrated, resource dependence can be weaponized, transforming economic interdependence into a tool of geopolitical influence.

This shift—from interdependence as stabilizing force to interdependence as potential vulnerability—marks a broader change in how globalization is understood. For much of the post-Cold War period, economic integration was assumed to reduce the likelihood of conflict by aligning incentives. Today, that assumption is increasingly contested. Dependence is now seen as a source of exposure, one that can be exploited through sanctions, export restrictions, or financial pressure.

The financial system itself contains its own chokepoints. The SWIFT network, which underpins global cross-border payments, illustrates how infrastructure can become a locus of control. Its role in enabling sanctions enforcement has underscored the risks associated with reliance on a single, dominant system. As a result, alternative payment mechanisms and efforts toward financial fragmentation are gaining momentum, though their long-term viability remains uncertain.

Not all forms of concentration, however, lead to fragility. The global network of undersea fiber-optic cables—responsible for the vast majority of international data transmission—offers a counterexample. Despite being dominated by a small number of firms, the system has been deliberately designed for resilience, with redundancy, rerouting capabilities, and excess capacity built into its architecture. The difference lies in incentives. In this case, resilience is integral to the value proposition, not an afterthought.

This distinction points to the deeper structural issue identified by Spence. In a decentralized global economy, private actors optimize for efficiency because its benefits are directly captured. Resilience, by contrast, is a public good—its benefits are diffuse, and its costs are borne individually. As a result, markets tend to underinvest in it. Addressing this imbalance requires coordination, whether through government intervention, industry collaboration, or some combination of both.

Governments are increasingly stepping into this role. Strategies range from onshoring critical production to building allied supply chains and diversifying sources of key inputs. Each approach carries its own costs and limitations. Onshoring can enhance control but is often economically inefficient.

International cooperation can be more cost-effective but is difficult to sustain in a fragmented geopolitical environment. In practice, most countries are pursuing hybrid strategies, balancing security concerns with economic realities.

The transition toward a more resilient global economy will not be seamless. It will involve higher costs, shifts in investment patterns, and likely a degree of persistent inflation in strategic sectors. It may also lead to a more regionalized global system, where supply chains are shorter, more redundant, and more politically aligned.

What is clear is that the era of purely efficiency-driven globalization is coming to an end. The emerging system will place greater emphasis on resilience, even at the expense of cost. For businesses and investors, this requires a reassessment of risk—one that goes beyond traditional metrics and incorporates structural dependencies that may not be immediately visible.

The challenge is not to eliminate chokepoints entirely, an impossible task in a complex and interconnected world. It is to understand where they exist, how they interact, and which ones matter most. In a system defined by tightly coupled networks, small disruptions can have large effects. Recognizing that reality is the first step toward managing it.

Spence’s contribution is to make that reality harder to ignore. The global economy has not become fragile overnight. It has been engineered that way, one efficiency gain at a time.