this article in The Atlantic about the decrease in retail jobs in the United States.
The most interesting point is driven home by the chart on the left. The part of retail hit the hardest is music stores, as you can see in the very last point on the left side of the graph.
Now keep in mind that this also encompasses stores that sold CDs, which have been virtually driven out of existence since the emergence of digital music, as well as mom and pop retail musical instrument stores as well.
The point is that the music business has felt the hit on so many other levels than just the artist and record label in the last ten years. They may not have been great jobs, but they were jobs all the same.