Agreed, all of that matters. Also, another big difference from Uber is that the vast majority of adults can drive, so their pool of potential drivers is large.

Agreed, all of that matters. Also, another big difference from Uber is that the vast majority of adults can drive, so their pool of potential drivers is large. Barbering is a niche skill and in many areas is regulated. I can't just download an app and start working unless I'm already a trained and licensed barber. Then I'd need to own or rent the van outfitted with the chair and other equipment. The scaling model is vastly more constrained than Uber.