If a shop plays a radio the radio station pays to play the song so why should the shop pay to hear the song? It's free advertising for the music after all. The collections agencies do a poor job. They try to maximise revenue to justify their existence but hamper exposure for artists.

If you want to move the industry on they are a keystone holding the old business model together. Remove them and the large labels that monopolise shell space, distribution and negotiations with new technology companies and we might get somewhere where more artists and fans are happy.