At least with semi there's continuity. And some of the China-hawks in the admin, though cray cray and warmongering, are also pragmatic. i.e. I think Trump banned TikTok out of spite, but probably Pompeo banned WeChat... as if Trump knows what WeChat is. And probably other hawks pushed for TikTok acquisition, and Trump poison pilled with with extortion to US treasury. A lot of the escalations are... unprecedented, kind of insane, but also calibrated enough that China can tit-for-tat. Whereas Trump would just be insane.
By all accounts TSMC didn't want to open plant in US. They were denying it for months / weeks / days before. And TSMC has invested so much capex in new Taiwan plants that it makes no fiscal sense for them to open low capacity plant in US unless heavily subsidized, and US wouldn't subsidize unless it was for MIC. As for Taiwan's future, really depends on how election goes. I'm skeptical China will allow TSMC / Taiwan to cooperate with US unfettered in semi. Right now there's mediatek buffering Huawei. And other Chinese brands can still sell phones with qualcomm. But if US manage to coerce all Taiwanese semi from working with China... well glitter bombs are going to blow up in Taiwanese fabs before real bombs. I think it's semi is a much more dangerous situation than most people realize. If Trumps over November, there's a few years before Arizonal TSMC comes online to form a useful Chinese semi containment strategy. Or TSMC will delay the play until after Trump term 2. Otherwise, stock up on graphics cards now.