>We don't have them though because no one wants them to exist, not the barbers, schools, salons, public or government. Consider that being a barber who only gives buzz cuts is like being a programmer who only writes web-scraping scripts on freelance sites. They could exist though, theoretically.

We don't know that because it is illegal. Most men cut use Clippers and scissors. There are businesses that operate all day doing these haircuts. You can teach someone how not to cut an ear off, poke an eye out with scissors and clippers very quickly. There is no regulatory middle option. Even if there is no demand, there could still be a regulatory middle option.