I realised after writing this, the EU as is uncomfortably often the case, may be the real forcing function for what happens with US policy irrespective of the media campaigns we're presently seeing. Here's hoping for a steady trickle of stale ChatGPT weights leaking from EU infra providers in the long term.
Specialists are expensive everywhere. China is functionally 80s Japan surrounded by several Brasils and all the frontier AI work is being done in that first part, where labour is expensive - if only due to competition for top talent.
Yes, if the Chinese stop trading, you can still use the existing solar panels (unlike the gas which you literally set on fire), but it's nonetheless a major vulnerability to not have any local know-how in creating important infrastructure.
Giving up all AI know-how and expertise to China just because they currently share their models would be a generational mistake.
Europe already got burned hard by this sort of thing too recently, and is now very sensitive to strateigic depencencies, and is working hard to lift them where possible.
And I dont mean actual trade stopping in the case of AI. The CCP could ban the release of Open Weight models tomorrow without running afoul of a single trade treaty
Having a third option significantly lowers the leverage that both China and the USA have over other countries.