That idea of Intel spinning off and developing it's own TSMC sounds great! What other factors have prohibited from someone else developing a more viable TSMC competitor in the US?
The idea isn't exactly unique, in that AMD did it and called it Global Foundries(GF)[1]. Then in 2015 IBM divested their foundry capabilities and sold them to GF as well. It hasn't been a stellar experiment which is largely laid at the feet of the challenge of managing that business.
[1] https://www.globalfoundries.com/