TSMC prints nearly three-quarters of the world's chips. ASML builds the only machines that can print them. Ninety-two percent of advanced logic sits on one island, 180 kilometers of strait wide. The tightest chokepoint in the global economy — and the geopolitics squeezing it.
Two companies make the modern world possible.
Every smartphone, every server, every AI model, every missile guidance system, every car with a computer in it — all of it runs on chips. And nearly all of the most advanced chips run through two companies: TSMC of Taiwan, which prints them, and ASML of the Netherlands, which builds the only machines that can print them. Lose either one, and the world does not slow down. It stops.
This investigation maps the tightest chokepoint in the global economy: how much of the world's computing depends on it, why no rival can touch it, and what happens when geopolitics squeezes the strait.
TSMC — Taiwan Semiconductor Manufacturing Company — was founded in 1987 in Hsinchu by Morris Chang with a then-radical idea: a chip company that designs nothing and manufactures everything. The pure-play foundry. Today it is the most important company in the world that most people have never heard of.
The numbers are from 2025 and they are staggering. Full-year revenue: $122.54 billion, up 36.1% year-on-year, driven by the AI buildout. Foundry market share: 69.9% for the year, rising to 70.4% in the fourth quarter. Three-quarters of its wafer revenue — 74% — came from nodes at 7 nanometers and below, the most advanced processes on earth. Gross margin in Q1 2025: 58%. Chief executive C.C. Wei runs a company whose biggest problem is turning down customers.
Chart 1 · The foundry league
One company, seventy percent
Global foundry market share by revenue, Q4 2025 · TrendForce via Focus Taiwan, March 2026
The concentration is not an accident of markets; it is an accident of geography that markets cannot fix. The 2021 SIA/BCG study — the industry's bible on supply-chain geography — found that Taiwan held 92% of the world's sub-10-nanometer logic capacity. Five years of "de-risking" later, the number has barely moved. TSMC's Arizona fab, its first in the United States, is the company's first US fab and is described in industry reporting as operationally brutal economics: American engineers at American wages building at Taiwanese speed is a bet, not a plan. The island remains the factory.
TSMC prints the chips. But it cannot print them without ASML — the Veldhoven, Netherlands company that is the world's sole supplier of extreme ultraviolet (EUV) lithography machines. These are the devices that etch features smaller than the wavelength of light itself onto silicon. They are, by common consent, the most complicated machines human beings have ever built: over 100,000 components, lasers firing 50,000 times a second to vaporize tin droplets into plasma, mirrors polished to atomic smoothness by Zeiss in Germany, assembled over years.
ASML held roughly 94% of the lithography market in 2025. It is not a monopoly by acquisition; it is a monopoly by physics — nobody else has shipped a working EUV tool. A low-NA EUV machine costs about €180 million. The new high-NA generation, the only path to 2-nanometer production, costs about €380 million each. Order books are full through 2027, with more than 110 EUV machines planned for 2028 alone.
Chart 2 · The lithography monopoly
94% of one market, 100% of the part that matters
Lithography market share, 2025 · semiwiki, September 2026
ASML is a company the size of a country: fiscal 2025 revenue about $37.5 billion, net income about $11 billion, roughly 44,000 employees, a market value around $677 billion — making it Europe's most valuable technology company by a distance. Chief executive Christophe Fouquet runs a supply chain that stretches across some 2,000 specialized firms, per the Financial Times: the machine is assembled in Veldhoven, but its soul is Zeiss optics from Germany, Cymer lasers from San Diego, and a thousand other irreplaceable inputs. Break any link and the line stops.
Now put the two companies together and draw the map. The world's advanced chips are printed in Taiwan, on machines that can only be built in the Netherlands, whose critical components come from Germany and America, for customers — Apple, Nvidia, AMD, Qualcomm — who are overwhelmingly American. The entire stack of the digital economy runs through a strait 180 kilometers wide.
Chart 3 · Geography of the chokepoint
One strait, the whole digital economy
Simplified map of the advanced-chip chain · Bureau schematic
The geopolitics are the export controls. Since 2019, the Netherlands has blocked ASML from shipping its most advanced machines to China, under sustained American pressure — Dutch licensing decisions, not the market, now decide who gets to print leading-edge chips. Beijing's answer is a crash program in domestic lithography that the industry treats as years behind. Washington's answer is the CHIPS Act and TSMC's Arizona fab. Neither answer changes the 2026 picture: the machines come from Veldhoven, the chips come from Hsinchu, and everything else is commentary.
The Bureau asked, in effect, what the failure modes are. There are three, and none is exotic. A blockade or conflict across the strait halts the printing. An earthquake — Taiwan sits on the Ring of Fire, and the 1999 Jiji quake is in living memory — halts the printing. A disruption to ASML's supply chain halts the printing. In all three cases the world's AI buildout, its smartphone cycle, its car industry and a meaningful share of its military electronics stop with it. The two companies are not too big to fail. They are too essential to replace.
The world does not have a chip industry. It has TSMC — and TSMC has ASML.
The consensus ledger below is the Bureau's hater-proofing. Everything printed above survived it; the disagreements are printed too.
The Bureau's rule: every figure carries its source, and where sources disagree, both are printed.
Market-share figures move quarterly; the structural facts — sole EUV supplier, island concentration — have not moved in a decade.
