Interesting. Didn't think of the military applications. I think both countries care about cutting edge technology markets in general, and not creating economic chaos by shutting down TSMC. But once TSMC in Taiwan itself is no longer essential, all bets are off. Given both US and China want to get away from relying on TSMC, it's only a matter of time.

With the US currently only caring about money and power, all interest in Taiwan's defence will evaporate. I hope for Taiwan's sake politics change before that day comes.