Robert Wright has been making the related observation that chip export controls to China are making the invasion of Taiwan much more likely.
In a world where TSMC supplied China, at least the PRC would suffer economically from the US/ROC bombing the fabs. With the PRC forced to mainland its own fabs, that leverage goes away.
China gets around the sanctions by having non sanctioned Chinese companies buy the machines, setup across the street from the sanctioned company and the send wafers back and forth using a conveyor belt over the street. The sanctions are more of a bump in the road then a full halt.
In a world where TSMC supplied China, at least the PRC would suffer economically from the US/ROC bombing the fabs. With the PRC forced to mainland its own fabs, that leverage goes away.