That's a good point. In his current role he is essentially the top technical person in the company.

I wonder if the reason alot of acquired entrepreneurs leave is that they are used to having so much authority and latitude that getting a middle manager role at google just feels like wearing a straight jacket.

Thanks for the counterexample. Just to be clear: His vesting clock is done?

He didn't exactly get picked up to be some random engineer in a big corp.