GM was bailed out because of the potential loss of US manufacturing jobs and the fact that auto factories can be converted to build other things in times of war. There was also no readily available buyer for GM as Ford was also hurting and there wasn't anyone else in a position to buy such a large company who was interested, though perhaps someone would have emerged over time.
OpenAI is a young company and if it collapses it is an indictment that AI is perhaps not really all that valuable. Further the technology and brand can be sold to a US company with plenty of expertise in AI themselves. The loss of jobs, relative to the larger economy, is minuscule. Google, Microsoft, Amazon, Apple, would all be happy to buy at a discount.
