He will be welcomed in Google, Meta,.. almost anywhere, even MS. It's not the end of the carrier, rather new beginning, or turning point. Staying at OAI may require sort of apology, which may be impossible depending of his ego size.
> I deeply regret my participation in the board's actions. I never intended to harm OpenAI. I love everything we've built together and I will do everything I can to reunite the company.
He might get a "sideways" promotion to do something that will frustrate him and make him leave on his own volition.