> If the US government says only US citizens can access a model, how do they enforce that.

It's easy if only enterprise users have access. It just becomes yet another compliance issue.

They won't let the public use it, even if citizens, because that would undermine the goal of controlling its use.

> I'm hoping this is a call to action for local AI.

If US frontier models stop being publicly available then they stop mattering, it also becomes hard to justify further investment in US AI companies if distribution is so locked down. The Chinese models will be the frontier.