That is a hypothesis.
So sure, someone needs to get up, so the hot water comes out of the wall, but it is not at all clear that it needs to be always the same guy grinding, while next door someone else is dying of boredom and watching netflix until he passes out. Give him a real chance to qualify and maybe he will be happy to do useful work. Remove the whip of existential threat and maybe he get up on his own again, because he wants to and not because he must.
Also there is so much energy spend on fighting for basic ressources, or fighting regulations, or other arbitary constraints, that in theory we could reduce the work needed by a lot.
But of course the question is - will society work at all, with the basic competition removed? Will it make population explode, until there are literally no ressources left to share? We don't know, but I am open to try out more experiments in that regard.