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Actually the labs an fans can be put up pretty quickly thanks to advances in robotics and engineering improvements though the prices for the equipment is sky-high now. Manufacturing processes have improved by a lot but Manufacturing to sub 10nm takes considerable engineering an costs.
it's not just prices... although, that's one of my points - tsmc's 5nm fab cost $~18B. intel just claimed to be building 2 fabs for $20B, which doesn't seem realistic.
but more importantly, all the euv lithography machines come from asml. and asml's been booked solid for... years? and since tsmc/samsung have already been expanding, we know they're getting the next buttload of them. we also know from asml's financials that intel hasn't been ordering them.
i don't think it's even possible for them to build a new fab in a year or whatever. even their own estimates (which have been crap) put it in late 2023/2024, and even that seems to be pushing it.


