Depends how you define 'sales'.
If you define a sale as one play, then you are right, but that's a completely circular argument as whether the charge should be for a single play or if it should be for the right to play a given track when you want, is the very thing being debated.
You are aware you yourself do that all the time, right?
(And, frankly, so does everyone - what do you think "agree" and "disagree" mean?)
I don't really know much about Bill Maher. I don't really know why I should regard him as any sort of authority on anything though.