As much as I appreciate performance based music. It's not the only approach and sometimes it's just not possible. I've written a lot of music now that just can't be performed. Correction! there's no point performing it (unless you really want to see me press enter on a laptop).
e.g.
http://soundcloud.com/runningonair/systems-out-of-chance-v1I'd like to hear someone try to play this!
So I guess it's still not an even playing field after all.
I think most serious music fans are not going to mind shelling out a bit of cash for the music they really like and as for the rest? If someone downloads something for free but never gets round to listening to it, why should we really care?