Essential to Every Advanced ChipWide moat

ASML (ASML) — moat facet

No EUV, no leading edge — and AI, the hungriest customer yet, needs the leading edge most.

ASML's monopoly matters so enormously because of what sits on the other side of it: essentially all advanced computing. Below the 7-nanometer node, there is no way to manufacture a chip without EUV1 lithography, which means every leading-edge processor in the world — the AI accelerators driving the artificial-intelligence boom, the CPUs in the newest data centers, the chips in flagship smartphones — is printed on an ASML machine. The company is not a supplier to the technology industry; it is the foundation beneath its most valuable layer.

EUV share of ASML system sales (%)16.9%201731.1%201946.0%202141.6%202338.2%202447.4%2025ASML Forms 20-F FY2019, FY2021, FY2023, FY2025; EUV system sales over net system sales
Nearly half of machine revenue now comes from the tool no advanced fab can do without.

The artificial-intelligence build-out has made this dependence more acute, not less. AI's insatiable appetite for ever-more-powerful chips drives the leading-edge foundries to build more capacity at the most advanced nodes, and every one of those nodes requires more EUV machines from ASML. The company therefore sits at the deepest chokepoint of the AI supply chain: chasing better AI leads to more advanced chips, more advanced chips require more EUV, and more EUV means more ASML. It is hard to find a business more essential to the defining technological trend of the era, or one positioned at a more irreplaceable point in the chain. When the whole world is racing to build AI, they are all, whether they know it or not, standing in line at ASML's door.

Moat trajectory: Widening

Widening. The AI build-out makes leading-edge silicon — and therefore EUV — more indispensable each year, deepening ASML's position at the base of the most important technology of the era.

The number that tests this moat
Reported
2026 net sales guidance
€43-45 billion, raised in July 2026

Every advanced chip needs EUV, so AI demand for those chips arrives at ASML as orders. Guidance that keeps rising says the dependence is growing; a cut would say chipmakers are finding ways to delay or economise.

Source: ASML Q2 2026 results ↗
⚠ Threats to the moat
⚠ THREAT 01
Essential to a Cyclical, AI-Dependent Demand
Indispensable to an industry that booms and busts is still indispensable — and still cyclical.
References
  1. ReportedBelow the 7nm node there is no way to make a chip without EUV.
    ASML — sole maker of EUV lithography (13.5nm light; ~two decades and tens of billions to develop; Nikon and Canon never fielded EUV; required below the 7nm node) — EUV in volume production since ~2018 · publ. 2018-2026 · source ↗
Sources
Generated September 23, 2026