The only way to make it work is a jump start (jump over the ocean)
That means allocating TSMC and their suppliers in Taiwan enough long term visas leading to green cards that they can bring their whole system over, from fab construction works to process engineers and management, as well as similar offerings to a large number of their suppliers. Time is running out though - on any day China could proclaim that all maritime traffic to Taiwan be subject to CCP customs and regulations, or other such shenanigans. It's an open secret that US Aircraft Carriers are no longer safe operating in those waters due to advances in drone and missile swarms.
To put that immigration in perspective, known immigration (including "temporary" refugee status) to the US in 2023 totaled 1.6 million souls. 1 million out of Taiwan's 23 million would therefore not that be that huge of a number - especially considering Taiwan's extremely low crime rate and density of talent the US is crying out for.
The alternative is without a doubt that all that talent will end up under control of the CCP, and they won't allow key people to leave, making life uncomfortable for the extended families of those they don't want to let leave.