I think most musicians "have been making music and doing live shows for years/decades successfully" don't actually make sufficient money to live but rather do i

I think most musicians "have been making music and doing live shows for years/decades successfully" don't actually make sufficient money to live but rather do it as a hobby (my only reference is living in a tourist town and knowing a few local musicians). I believe the only working professional musicians out there are basically working for the film, video game or music (as session musicians) industries making music to order (plus some professional teachers).