China must obviously gain cutting edge node fabs or associated knowledge and processes from seizing Taiwan given the claims you've made about Taiwanese being prevented from being hired by the Chinese Government.
Time is on China's hand, Taiwan and south Korea should be worried about their so called ally the US stealing their tech. Because without TSMC what is Taiwan for the west a annoying island that we need to backstab some time in the future like the western backed regime in Afghanistan. At the end of the day its just business.