R Hansen says: >According to your numbers music stores would be viable.
Nonsense. By your non-logic, same might be said for book stores. Reading is rare? I don't think so.
Anyway, I think music stores are far more common than book stores. Within 10 miles of where I live there are multiple music stores. I get the sense you don't live anywhere near either coast, or else you don't look around enough. If you are not interested in something, it may as well disappear. If you are, the world can seem full of that thing. You may even know people who can play, but perhaps you aren't aware of the fact.