Earlier quoted context omitted.
It will not work out over the long run. This is corruption; it breeds corruption, and corruption creates victims. Victims don't put up with it forever and as the old cold case appeal spiel goes, "alliances shift over time". More prosaically, in the short term: TSMC are now effectively compelled to acquire Intel entirely or at least a controlling share, right? Unless Trump's shakedown requires them to own 49% but then…
TSMC is not going to get over the 50% threshold because it has no free will in this whole matter, as the very existence of Taiwan, and hence of TSMC, depends on the political will of the US. Otherwise I fully agree with you, this will definitely not work out in the long run, but who cares about the long run anymore in this day and age?
I'd imagine they would be happy to have TSMC still selling to NVidia, Apple and AMD, and therefore a powerful lever in case of future US export controls/etc.