Bandcamp is pretty big nowadays, but it could still be considered a boutique retailer when it comes to pop music. It depends a lot on the genres you prefer. No matter what audiophiles claim, 320kbps MP3/AAC/Ogg/etc. files
are equivalent audible quality to CDs, and that's what most online music stores sell.
Subscriptions have existed for hundreds of years, for anything from newspapers to soap. Priced correctly, subscriptions are perfectly fine. You pay a recurring fee for a service, and in return you don't have to worry about logistics or storage.
A subscription model could even work perfectly fine for cars (and does, in many cities), as long as it's correctly managed and fairly priced. Pay a set monthly fee, and you get access to a range of cars, parked in a central location near where you live. You don't have to worry about maintenance or depreciation, the car sharing company handles all of that. In return, the monthly rate is lower than what most people would pay to actually own and maintain a car of their own. It works because the costs are shared across a lot more people.
I know a lot of people prefer to own stuff, and I get it in a lot of cases, especially when you know you'll need the item in question for a long time, need to modify or otherwise do something that's outside of a normal use case. On the other hand, I think this race towards owning as much stuff as possible is driving western society to destruction.