If the link between creation and income is destroyed, then who gets to set who earns what?
Also, I maintain a list of music I like. I make sure I give back generously in one form or another to artists I like. That's why I've got hundreds of actual physical records. I sort the list using different criteria such as the perceived value of the record that made me tick, the perceived value of the artist/band's overall career, the artist/band's visibility, whether the artist/band actually need the money, etc...
Now, I need to precise that bands I listen to are pretty obscure, sometimes are side-activities for those involved and usually don't come any close to paying the bills.
I see two issues hiding
1. the greed of consumers who want the stuff for nothing and don't care about how artists eat and tour
2. the greed of record labels who don't believe another model is possible (listen and then decide if it's worth one's money)
I'm all for bandcamp-like structure that help serendipity as well as letting artists and sometimes listeners decide for their own.