High-NA — The Next MonopolyWide moat

A monopoly is only as durable as its next generation, and ASML has already built the next one: High-NA EUV, the successor system that extends the monopoly forward to the chip nodes of the coming decade. High-NA (higher numerical aperture) machines print even finer features¹ than current Low-NA EUV, are physically larger and more complex, and cost over €350 million apiece — and, once again, ASML is the only company that makes them. The monopoly is not a one-generation phenomenon that a rival might leapfrog; it is a relay ASML runs against itself, handing the baton from one exclusive generation to the next.

High-NA matters because it resets the replication clock. Even in the unlikely event a competitor someday matched today's Low-NA EUV, they would find ASML already a full generation ahead, selling the machines the leading edge had by then moved on to. That said, an honest account notes that High-NA's adoption has been more gradual than first hoped: the leading customers (TSMC, Intel, Samsung) have been slow to design it into their roadmaps, with meaningful volume not expected until the 1.4-nanometer and 1-nanometer nodes later this decade, because Low-NA EUV can be stretched further than expected and High-NA is fearsomely expensive. So the next monopoly is real and already in ASML's hands, but its revenue ramp is a slower burn than the excitement suggests — a reason the machines are the future without being quite the present.