CHIPS act doesn't pay _anything_ until real world milestones are achieved; to first approximation, as you said, "a fab is up and running."
And TI likes making chips in the US, was already expanding a lot, and kinda need to for all the special or older processes where they do fancy analog or persistent memory tricks. Or that just don't need more leading nodes if the financials work out, including NRE for products that aren't going to be made in numbers where TSMC's finest pays for itself. (Side note, for TSMC converting a tape out into a set of leading edge masks can only be done on the island.)
Meanwhile, Ned Hamson (npub1dvd…e5l8) is studiously ignoring how Trump negotiates. I guarantee you the retards who are currently running both Taiwan and more and more running TSMC off the island (especially due to power, they saw their nuclear power plants as KMT artifacts so they had to go, now they've got ten days of LNG supplies before it's lights out) are now paying full attention to this matter.