I find this question dumb to ask since we provably know the answer for our selves especially that there's no wealth is stable. We see those richest man on earth keeps working on despite of they already have enough wealth to sustain their needs until they get old.
So same goes with people earning with Bitcoin and for sure they won't stop even if the price would reach to the point he's asking.
I myself don't plan to retire even if I'm earning lots of Bitcoin or even I'm old since with Bitcoin there are lots of opportunities to grab and we can do all of this at home while there's internet available for us to access those activities that can possibly generate us profits from this coin or industry we are working with.
Just because Elon or other rich people don't have a retirement plan despite having hundreds of billions of dollars. Or just because you don't have a retirement plan doesn't mean others have to think like you and follow your lead. Everyone has different thoughts and ideas about life, no one is the same, and we cannot impose our thoughts on others.
But OP's question is really silly because of the lack of necessary data because not everyone owns the same amount of bitcoin as notocactus said.
Unlike you, I have my financial goals and when I achieve them, I will retire and spend my time doing other things, I will not spend my whole life just making money.