I don't think I've ever understood the motivation behind working for so much money. If I got paid $250M a year, I'd work a year and then live comfortably for the rest of my life pursuing my passions. Even if the thing I was doing for work was my passion, I'm sure I'd prefer to do it without ownership of that work going to someone else.
These aren't annual pay packages. It's some "can't retire on that" base salary plus a promise of gradually vesting equity on a multi-year schedule. For public companies, you'll get that amount if you hang around for x years and there is no sudden decline in market price. For non-public companies (OpenAI), the equity is more pie-in-the-sky.
I'd expect a few millions of annual pay, anyone could retire on that. Whether someone wants to, it's different but having anything beyond $1M available is definitely sufficient, especially if you're sub-40.
Eh, depending on the stress of the work, how much I enjoyed it, etc, $250M can buy a lot of convenience in life that lets you do it for as long as you want and that can be truly transformational generational wealth.