nostr:npub1hd2rzs04wqq4pqavyr9dnmczg80nzgwg0p73eu3y63ck3gf4ejwsz2zm0u I do both. I sell my music but also make it available for free (as lower quality YouTube videos).
For me it's more important to get my music out there than to make money right away.
I've never thought about if that makes it harder for others to charge for their music but I don't think so. Honestly selling my music and making albums wasn't even originally part of my plan, and I wanted to abandon it after my first album. I get more out of making shorter, less refined songs for YT