"You scratch my back and I'll scratch yours" is not an appealing proposition when the skin on the music industry's back has grown thin from malnutrition.
Online piracy is pulling most of the revenue out of the music sales business. CD sales have tanked horribly over the past 10 years and there is far less revenue to be made in legal downloads. Artists and labels can no longer be assured of profits from the sale of minor hits to consumers. Consumers would rather download it for free than pay $15 at WalMart. Since lawmakers seem disinclined to slap technological curbs on music piracy, a new revenue source had to be found to keep the music industry viable. Who better to "tax" than radio, the largest industry that uses music as a programming linchpin to generate profits?