i have 400 and only play like 10 minutes a day
so if you have 4000 (chess.com doesn't allow you to start games if you have more than 10 games to play or more than 5 pending requests and these two combined make it insanely hard to do that)
you would only have to play liek 2 hours a day
not that bad
but i don't really try which is why my rating is so much lower than my blitz ratin for example
Alright it looks like we have a winner here...
https://www.chess.com/member/andrewllll
2500 games with 0% timeout!?!?
Thats huge by all standards , I have 86 games open at present.