The current boom in the concert/touring business, revenue from emerging streaming platforms (Spotify, Pandora, XM Radio, etc...), endless possible licensing opportunities and corporate sponsorship/brand tie-ins are making up for the slack in traditional album/single sales. HOWEVER, from a music producer's perspective dwindling sales only means further dwindling $$$ in terms of upfront advances on single and album placements which means a higher focus on the publishing side of the equation and less focus on the mechanicals side. To have a financially viable career the concept of the "producer" will have to go through a redefinition (ex - producers being their own artist like those in the EDM genre and/or taking ownership of the process via production companies thus allowing them access to the same revenues as the artists they put out) or else outside of a few superstar exceptions become glorified session musicians...