The most common misunderstanding that people have about the extreme rich like Bezos or Musk, is that they're trying to get more money as their motivation. It's a remarkable failure of understanding, a kind of overly simplistic boiling down. Akin to: Iraq was about the oil (it was about power and control over the Middle East more broadly, oil is a trinket like the USD, secondary; the Middle East is a great powers battleground, between the US and Russia (and more recently China)).
They're trying to get their way, money is one means. They're trying to implement something they have in mind, outcomes, money is very useful for that in most cases. They're not trying to get more money as the thing unto itself, it's a tool of power/control/influence.
People that have never been near extreme wealth usually fall back to the very primitive reasoning of: it's just money grubbing, it's base greed. Because that's bumper sticker simple thinking that is easy to cuddle up to.
Back in reality, Musk, Bezos, Zuckerberg, et al. these people are humans, they want things, they want outcomes, they have notions for how they think the world should be. Money helps them pursue that, it's nothing but a tool for them, a means to an end. It's comically foolish to think the money is the end.