This was my first thought when I heard about this. If Taiwan ever looks like it's going to fall, I think that there's going to be a massive concerted effort to extract all the talent and production equipment over to America so that it's not in China's hands.
Sure, TSMC would want to do that to salvage what they can. I wonder if the Taiwanese government is as keen on that arrangement though; TSMC plants are their biggest bargaining chip, and Trump has upending the entire world order mere weeks into his term.
