Earlier quoted context omitted.
In any negotiation, you need to understand what leverage either side has. In this case, CA could block the conversion, and OpenAI could leave California. Both are possible but extremely unlikely outcomes! So the whole point is to take these unlikely outcomes to the table, negotiate in good faith, and come out with an agreement. So California needs to believe that OpenAI will stay in California just as much as OpenAI…
If I am understanding things correctly, OpenAI could leave in the future - but CA can’t retroactively block the conversion in that case.
It's about a moment in time, not an "in perpetuity" agreement.