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.
