China fantasy version: China takes Taiwan and TSMC and everybody minds their own business. China miraculously converts this move into de facto monopoly. America can't get chips and tries to negotiate with China's tight new ally Mexico, losing California in the process! Holy sh*!
Maybe more real: China takes TSMC like a chess piece, tries to put it back on the board like in Xia...Shogi (sorry, my Japanese is better here). Except somehow (sanctions, brain drain, sabotage, etc) the piece metaphorically crumbles to ash. Buffett is still so very glad to be out.
Another one: Taiwan and foreign partners with lots to lose like US, Japan, and SK successfully turn Taiwan into a meat grinder. TSMC becomes a godforsaken piece of charred land. Miraculously a very-TSMC-like corporation appears split between those countries with some kind of Taiwanese stake as well.
Lots of possibilities to think about. Could happen in the next 5-20Y rather than a few though. WW2 for example had a very long build up from expeditionary moves to the bigger strategic conflict stuff if you look from the Japanese perspective, and this pattern has a lot of benefits to China given factors like US administration churn, etc.