Taiwan's TSMC foundries are their nuclear currency: they must keep them to remain protected by others, and yet the others didn't completely build interchangeable and resilient capacity elsewhere to do what essential for them that they had the money to do.

So now Apple, Nvidia, AMD (possibly), and most car manufacturers will be up a creek without a paddle when China invades in 1-2 years. That is unless China's Xi is bluffing to mollify domestic war hawks and reunification zealots by going through the motions of building an army of war machines without intent to use them, but I don't think that's probable. It's possible that Trump already made agreements with Xi to cede "Oceania" if they allow the US to take Greenland and South America for empire-building neocolonialism.