If you’re planning to not work at all, $1 million is approx. $35,000 per year in salary.
At $5 million, we’re talking more $200k per year. I’d likely still work.
At $10 million, we’re seeing more like $400k.
At $40 million, you can can early at least $1 million/year. This kind of puts you in a new bracket for things you can blow money on.
If you quit working entirely, you will become not very employable so you need to consider that.