Bandcamp is a great service, but I wouldn't say its a great product. I will get emails saying that an artist released a new album, but when i check my feed it doesn't show up. I have to go to that artist's page directly sometimes. The feed system is buggy, and that's an important part of a music app for discoverability. And the mobile app still doesn't allow me to save offline, last I checked, also important for a music app when streaming on the road.