Someone did remind us that TSMC relies on dutch machines for wafer productions. It's not china-skills-black-hole as one could think (I used to)
TSMC, Samsugn, Intel are all relying on ASML.
ironically, Taiwan falling to the PRC probably makes the US the inheritor of at least down to TSMC's 5nm node. That DoD backed foundry in Arizona then being orphaned would probably mean it either spins off as a US company or goes on the market in some backroom deal.
Actually making the wafer into proper chips is multi-multi-step proces ( like 50 - 100 steps ).