The better comparison with Spotify is that it's a mafia that you pay $11 / month for the rest of your life and they give you a bunch of free music but if you ever stop paying, they'll bust into your house and take it all away.

Vs. spending $10 for an album you might not like but you can sell it, give it to a friend, or put it in storage for 10 years until you find it during a move and realize your tastes changed and now this album fucking rocks (happened to me with a few things).

Oh and Bandcamp ftw. You can listen to most albums free for a few times and when you buy it, you own it forever w/o DRM - plus if you buy a hardcopy, you get a digital one included. I used to use Napster like that - as a shit quality preview of an album I might end up buying later.