At this very moment my iMessage window is open to a group chat between my business partners (who are all professionals in the music industry) about how much music has been de-valued. People are paying $10/month for Spotify and receive tremendous value. That subscription fee is simply not enough to keep Spotify and the artists afloat. If Spotify doubled their subscription cost tomorrow and it went to the artists I would gladly pay it. Unfortunately I think I may be in the minority and I don't know if casual listeners would be so sympathetic to having their subscription rates raised so dramatically.
In short, I believe we've been a little bit spoiled by the wealth of music and film that's been on offer from these services for the last decade.