Was saying this ever since the technoligical transfer to the US began. The more is transferred, the less the US has an incentive to defend Taiwan in any domain. Also TSMC’s interest is not the same as Taiwan’s. The leadership and ownership of TSMC, a capitalist corporation, will focus on their own profit growth. If that profit growth goes through technological transfer to the US, they will transfer technology. In the medium term, for them it doesn’t matter whether it’s Taiwanese workers producing semiconductors or American. Taiwan’s sovereignty interest is in conflict with that.