In the end it's pretty elementary. The general public has no desire to be shaved by a barber and barbers in general have no desire to provide the service. Forgetting about health codes and the barber's abilities just imagine in todays sue crazy environment if a barber cut you and you needed some stitches and had a scar or you caught some bug. I would imagine the insurance company would be dictating what a barber could or could not do.