Hook
Right now, ships carrying one-fifth of the world’s oil are sitting still in the water, engines idling, waiting. Not because they’re broken—because they can’t get through a passage 21 miles wide. The Strait of Hormuz, a strip of ocean between Iran and Oman, has effectively closed. Oil futures jumped 8% in an hour. European natural gas prices spiked 12%. Insurance premiums for tankers tripled overnight. Markets from Tokyo to London reacted instantly to ships stopping in a place most people couldn’t find on a map. Why does a single narrow waterway have this much power over the global economy?
What Is A Chokepoint
A chokepoint is any unavoidable narrow passage where flow concentrates. In networks—shipping routes, supply chains, communication systems—chokepoints are places where everything has to squeeze through. They exist for three reasons: geography makes them unavoidable, efficiency makes them attractive, or historical accident makes them entrenched.
The Strait of Hormuz is a geographic chokepoint. At its narrowest, it’s 21 miles wide. Ships traveling between the Persian Gulf and the open ocean have no alternative. There’s no detour around Oman. No alternate route that doesn’t add weeks and thousands of miles. If you’re an oil tanker leaving Kuwait, Saudi Arabia, Iraq, the UAE, or Qatar, you go through Hormuz or you don’t go.
But chokepoints aren’t limited to shipping lanes. Ninety-nine percent of intercontinental internet traffic travels through undersea fiber-optic cables. Most of those cables pass through a handful of landing stations—physical buildings where cables come ashore. If someone cuts the cables or shuts down a landing station, entire regions go dark. Taiwan produces over 60% of the world’s semiconductors, and TSMC alone makes 90% of the most advanced chips. Every smartphone, every AI server, every modern car depends on production flowing from a single island. The Suez Canal handles 12% of global trade and 30% of container traffic between Asia and Europe. When a single container ship got wedged sideways in 2021, it cost $400 million per hour in delayed goods.
Chokepoints concentrate power because they concentrate flow. Control the chokepoint, control the system.
Why Hormuz Matters
The Strait of Hormuz isn’t just a shipping lane—it’s a valve on the global oil supply. Twenty-one million barrels of crude oil pass through it every day. That’s 40% of all seaborne-traded oil and 20-30% of total global petroleum supply. The numbers only tell part of the story.
Every major oil exporter in the Persian Gulf depends on this strait. Saudi Arabia ships 6.2 million barrels per day through Hormuz. The UAE ships 2.7 million. Iraq ships 3.5 million. Kuwait, Qatar, and Iran add millions more. These aren’t optional shipments—they’re the primary revenue source for these economies and the primary energy source for importers. China gets 40% of its crude oil through Hormuz. Japan gets 75%. India gets 60%. South Korea gets 70%.
When the strait closes, there’s no immediate alternative. Saudi Arabia has a pipeline to the Red Sea that can carry 5 million barrels per day, but that’s less than half of what normally flows through Hormuz from Saudi fields alone. The UAE has a pipeline to the Gulf of Oman that bypasses the strait, but its capacity is 1.5 million barrels per day—a fraction of what’s needed. Iraq, Kuwait, Qatar, and Iran have no alternative export routes at scale. Their oil stays in the ground or sits in storage tanks.
The economic effects cascade immediately. Oil prices spike because traders know supply will drop. Airlines, shipping companies, and manufacturers face higher fuel costs. Those costs pass to consumers as inflation. Central banks face a choice: raise interest rates to fight inflation or keep them low to avoid recession. Countries that depend on oil imports face balance-of-payment crises. Countries that depend on oil exports lose revenue but can’t sell their product.
This isn’t theoretical. It’s happening right now. And it happens because decades ago, we built a global energy system that runs through a 21-mile gap.
The Efficiency Fragility Tradeoff
Chokepoints exist because efficiency demands concentration. When you optimize a system for speed, cost, or convenience, you create bottlenecks. This is true for oil tankers, semiconductor factories, and everything in between.
Consider why oil flows through Hormuz instead of a hundred different routes. The Persian Gulf contains some of the world’s largest oil fields. These fields are close together geographically. Building export infrastructure—ports, pipelines, loading facilities—costs billions. It’s vastly cheaper to build a few large terminals and ship from there than to build dozens of smaller facilities scattered across thousands of miles of coastline. The strait is the natural exit point. Over decades, the entire system optimized around it.
The same logic applies to container shipping. Ninety percent of global trade moves by sea. Ships have gotten larger because larger ships are more efficient per container. But larger ships require deeper ports with specialized cranes and infrastructure. Only a few dozen ports worldwide can handle the biggest container ships. This creates concentration: goods flow through hub ports like Singapore, Rotterdam, and Los Angeles. When one hub has a problem—a strike, a COVID outbreak, a ship blocking the Suez—the entire system backs up.
Just-in-time manufacturing follows the same pattern. Toyota pioneered the system: parts arrive exactly when needed, minimizing inventory costs. Every major manufacturer adopted it. But just-in-time requires reliable delivery. A single missing part stops the assembly line. When COVID shut down a semiconductor plant in Malaysia, car factories in Detroit shut down too. The efficiency worked perfectly until it didn’t.
The tradeoff is structural. Concentration creates efficiency: economies of scale, specialized infrastructure, predictable routes. It also creates vulnerability: single points of failure, cascade effects, no redundancy. You can have a system optimized for normal conditions or a system built for disruptions, but not both at the same cost.
We chose efficiency. That choice created Hormuz, Suez, TSMC, and every other critical chokepoint. The ships sitting idle in the Gulf right now are the price of that choice.
Chokepoints Everywhere
Once you see the pattern, you see it everywhere. Every optimized system creates chokepoints. Every chokepoint creates leverage.
In technology, app stores are chokepoints. Apple and Google control the primary distribution channels for smartphone software. If you want to reach a billion users, you go through their platforms. They set the rules: 30% commission, content guidelines, approval processes. Developers have alternatives—web apps, sideloading on Android—but those routes reach fewer users and generate less revenue. The chokepoint isn’t absolute, but it’s strong enough to shape the entire industry.
Cloud computing has the same structure. Amazon Web Services, Microsoft Azure, and Google Cloud host most of the internet. When AWS has an outage, Netflix goes down. So do thousands of other services. Companies could distribute across multiple cloud providers, but that’s more expensive and more complex. So they concentrate. Efficiency creates the chokepoint, the chokepoint creates vulnerability.
Payment systems are chokepoints. Visa and Mastercard process 90% of US credit card transactions. If they decide not to process payments for a certain business—cannabis dispensaries, adult content creators, political groups they consider risky—that business loses access to most of its potential customers. Cryptocurrency was supposed to route around this chokepoint, but most people still convert crypto back to dollars through centralized exchanges, creating a new chokepoint.
Physical infrastructure creates obvious chokepoints. New York City has 21 bridges and tunnels connecting Manhattan to the rest of the world. Close those, and you’ve isolated 1.6 million people. The US electrical grid has three main interconnections: Eastern, Western, and Texas. Most power can’t flow between them. A failure in one region can’t be offset by excess capacity in another. The system is efficient within each region, fragile across regions.
Even social systems have chokepoints. Academic careers depend on peer-reviewed publications. A handful of elite journals control what counts as legitimate research. If they reject your work, your career advancement stalls, regardless of the work’s merit. University admissions, professional licensing, immigration visas—everywhere systems optimize for efficiency and gatekeeping, chokepoints emerge.
The pattern is universal: when we build systems that concentrate flow, we create points of control. Those points can be managed well or badly, defended or attacked, regulated or left alone. But they don’t disappear. They’re features of optimization itself.
Close
The ships are still waiting, and the markets are still watching. The lesson here isn’t about this specific conflict or these specific ships—it’s about how we build systems. Every efficiency we gain creates a potential failure point. Every optimization creates leverage. Whether it’s a strait, a cable, or a platform, chokepoints are features of how modern systems work. Geography, it turns out, still matters—even in a globalized world, 21 miles can control everything.