Maybe I’m misunderstanding something here, but I find that nowadays the process of buying high-quality, DRM-free MP3 music is as simple and straightforward as it can be: you purchase the files (on Bandcamp, Amazon, Apple Music, etc.), download them legally, and then physically own them forever.
By the way, when purchasing through Bandcamp, 80+% goes to the artist (https://bandcamp.com/fair_trade_music_policy). So not only do you own the music, but you also make sure the artist is properly paid for their work.