Most individuals aren't essential, and no one would prioritize them. However, a company is successful due to the individuals that work within. When 700 out of 770 employees in quite frankly the hottest startup in the world band together and threaten to leave (and join Microsoft) if they aren't given an appropriate explanation, it doesn't matter what anyone thinks an employer owes an employee. Implying otherwise is absurd.

If ~91% of the employees leave OpenAI, they will not be fine. That is delusional.