I guess that’s a possibility. But I think most artists want their work (at least their studio records) to be available to as many listeners as possible. I think paywalling most content will not be successful for the artist nor the record label. (The same way exclusivity deals with streaming services haven’t really worked out).
But I wouldn’t really mind paying 1 dollar per artist for some bonus tracks, when I know that when 6000 people do the same they will be able to succeed financially