If it gives them a leg up, sure, why not?

Currently they are the ones who are publishing stuff in the open. The American discourse is to close this market.

I'm not Chinese or American. If China exports their AI technology and the US doesn't, I know who's going to be my supplier and I'd be very happy to pay them.

If they block access to their own citizens, to be frank, I could care less.

If their Party has their own version for what happened in the Tiananmen Square, so be it. They want to do business while the US is being hostile to everybody else.