That being said foundries are a hard business, there is a reason there has been so much concentration and companies throwing the towel.
It might not be the only way to get things to work, though clearly I have no real idea. :)
At least cpu's haven't been adhering to Moore's Law for a few years now.
So it's not like the West is sitting around doing nothing.
Also China has started investing heavily in domestic AI chips. Huawei's Ascend is roughly comparable to the A100 I think, but you shouldn't forget that this has caused a flurry of GPU as a service company to pop up outside of China that serve GPU compute to Chinese customers.
The best this kind of legislation does is make it a bit more expensive for China to access GPU compute. It's worth remembering that a lot of tech was banned from Iran, but that never stopped Iranians from getting any of those components. It just made them twice as expensive.
https://www.trendforce.com/presscenter/news/20231211-11957.h...