Royalties are almost 100% a private industry matter in the US. There is compulsory licensing with legally mandated royalties for certain types of musical perfor

Royalties are almost 100% a private industry matter in the US. There is compulsory licensing with legally mandated royalties for certain types of musical performance, but that is used quite rarely. The vast majority of US music licensing goes through performance rights organizations like ASCAP and BMI. I also wouldn't characterize musicians as being happy with the current state of royalties. Ask a moderately successful musician how much they make on Spotify plays sometime.