> "The most important decision was shifting to extreme ultraviolet lithography at a time when Intel thought it was much too expensive and difficult to implement; TSMC, backed by Apple’s commitment to buy the best chips it could make, committed to EUV in 2014, and delivered the first EUV-derived chips in 2019 for the iPhone. Those EUV machines are made by one company — ASML. They’re worth more than Intel too (and Intel is a customer)."

CNBC toured ASML clean rooms in a very interesting video. IIRC, the only thing keeping ASML from exporting these machines to China is some EU/USA export control rule:

https://www.youtube.com/watch?v=iSVHp6CAyQ8