I think you already answered it. I think she's smart enough to know the value of what she has will be more certain if Jeff has control.
And she's also smart enough to know that $35B is way more than she could ever spend/use/invest/whatever.
I doubt it. What is he getting from that title, at all? His already obnoxiously rich. He is totally willing to divest just to put money into risky bets like Blue Origin. He even bought a newspaper, in what I believe was a personal move to deeply understand the role of press in society development and policy making (because all other reasons are stupid, as already proven by the multiple issues that have originiated from his association with WaPo).
I think he has a goal that goes beyond being the richest person in the world or at least it doesn't depend on that. His personal bets under a investment light are the oppostie of trying be the richest person in the world. I suspect that's not his goal.
This makes a lot of sense. They probably both realize that the stock could be worth significantly less if he didn't maintain control of all three companies, given that the market was already reacting to that possible outcome.
> Jeff remains the richest man in the world, even after losing $35.6 billion in Amazon stock.
I wonder if part of this settlement was because he actually cares about being the richest person in the world and she was kind enough to make sure he stays that way?