Barbers and female hair dressers offer a service and sell an experience. That's why you get coffee and magazines and all that. And that's why he has a van he drives his tools around in.

Thing is, all you need for the job fits in a bag, and barbers have been mobile forever. Sure, you had to sit on your own chair in your own living room listening to your own stereo. Another bonus is that it's one of those rare trades where you make things disappear instead of creating stuff, so the tax man rarely catches you.

Source: My father did everything hair related for 40 years on multiple continents.