⚠ Upgrades Can Cannibalize New-System DemandLow threat

Performance upgrades are lucrative, but they carry a subtle tension with ASML's core equipment business: every time a customer squeezes more output from an existing machine through an upgrade, they may defer or reduce the need to buy a new one. In a capacity-constrained boom this scarcely matters — customers want both more output from old machines and as many new machines as they can get — but in a softer environment, upgrades that stretch the existing fleet could, at the margin, substitute for new-system purchases, trading a large one-time sale for a smaller upgrade.

This is a mild and mostly theoretical tension — the upgrades are high-margin and the customer relationship is deepened either way, and the leading edge ultimately requires new machines that no upgrade can substitute for. But it is a reminder that the installed-base business and the new-equipment business are not wholly independent: the same capacity-squeezing upgrades that boost service revenue can, in a weak cycle, blunt demand for the systems that are ASML's larger prize. The company manages both sides of its own franchise, and mostly the two reinforce each other. But an honest reading notes that helping customers get more from what they own is not always perfectly aligned with selling them more of what they don't — one reason High-NA adoption has come slower than hoped¹.