It's a nice personal achievement, but I can't help myself cringing at business models of this kind. It's plain old extraction of surplus-value, adding very little to the economy as a whole. The workers would be better off operating as a cooperative, I wish they had the education to know that from the outset, and the means to implement it.
From what he says, it looks like he gets $40 to $60 per job, whereas cleaners get $15 to $30 per job -- they work in team, so it's $30 to $60 in total (it's all pre-tax, from what I understand). Not a terrible arrangement, to be honest, especially in the Land Of The Free From Socialism; apparently this is much more than what they used to make when a big company exploited them.
I do agree however that the IRS will kick the shit out of him if he doesn't switch to proper employment asap, and that's how it should be: it's all fun and games when things go well, but when hard times come (and they will come) the workers should get some protection.