The only question I really have in mind is who should/will pay so we end up with that roughly $24 average per annum per music consumer. Current distribution schemes seem to indicate only about 5% of the people will pay anything significant for music. The rest want it free. But maybe they would pay a little if it was reasonably insignificant and hassle-free.
This is certainly true for me. I have not paid anything for music in the last 10 years. However, I would certainly be wiling to do so if
1) I could easily identify music that I wanted to listen to with spending lots time sorting through music I disliked
2) It was easy to buy and doing so did not take much time
3) The music was easily transportable so I could listen to it without having to worry about remembering to carry around an ipod CD or some storage device all the time.
I suspect there are a lot of people out there like me.