I hope I'm wrong, but looking at #SongTradr's business model I can only assume their reason for buying #Bandcamp isn't to help bands connect with more fans to sell music, but so that they can connect with more bands to sell their license-management subscription services (https://www.songtradr.com/pricing).
It would just take one Omidyar or @craignewmark to start funding
#ArtistOwned, #fediverse-ready content platforms to change everything. But it feels like we've been saying this for nearly two decades.