That is exactly what they are going to do. Mark my words: bandcamp will be a subscription service soon, and likely will be a revenue generating click-through to Spotify or itunes or similar.
The big labels can’t STAND that we can get good music, but/own it outright, listen to it at our leisure without commercials, and share it with friend.
I encourage everyone to checkout Funkwhale. Specifically the instance I use, because I want access to your music lol.