Yeah, Devin Townsend (who I would consider a successful musician) recently discussed how much he makes in an average year - and it was something like (going from memory) 70K per year before you factor in all the expenses associated with being a musician and creating records (which are quite large!). Touring is where much of his income comes from and he had recently “invested” in creating a new album and setting up a tour, but COVID wiped that all out putting him in a less-than-ideal financial situation.

I think that much like working at McDonalds or dealing drugs most people don’t make much - the financial rewards are fairly concentrated to a few individuals.