I don't have billions and I don't manage people (I've been voluntold to manage 1 person a few times, and I'd rather that not happen again), but I have enough that I don't need to work for economic reasons.
I'm working part time anyway, because it keeps me busy and interacting with people outside my home, and it gives me access to interesting real world problems that I can't really access as an individual person on the interwebs. Having other people depend on me to get things done provides motivation to keep moving on things that I can't seem to manage on my personal projects.
If I liked the kind of organizational management work a CEO does and I was good at it, I'd probably get roped into being a CEO.
I'm working part time anyway, because it keeps me busy and interacting with people outside my home, and it gives me access to interesting real world problems that I can't really access as an individual person on the interwebs. Having other people depend on me to get things done provides motivation to keep moving on things that I can't seem to manage on my personal projects.
If I liked the kind of organizational management work a CEO does and I was good at it, I'd probably get roped into being a CEO.