EUV was developed with in a Cooperative Research and Development Agreement between the US Department of Energy, Intel, ASML, and so on - giving Congress control over who ASML sells the EUV technology to.

So yes, US companies do have a choice. They can lobby Congress to cut off TSMC from their main hardware and parts supplier entirely, crippling it altogether, except for their Arizona plant which is ripe for nationalization for natsec.

Taiwan is too dependent on the USA ATM to make that choice. If they were to go it without the USA, the only choice would be to become an actual bonafide province of China, they aren't going to exist on their own. Almost everyone else outside of eastern Asia, however, can make a different choice.