$3.99 is too much for a sheet. I say big pro composer guy should understand that. Maybe a couple of (IMHO) hack musicals shouldn't make him as much. They should make him something though.
I'm a long time professional who has probably lost big publishing $ to file sharing but saw it coming 20 years ago so wasn't surprised. (and yes my music would probably not be on musical theater girls iPod)
Times change. I still make a living in meat space - playing live - but there's a lot less work to go around.
I also make $ coding, have had clients that said they didn't like it, didn't want to pay and then found my code live on their site. They knew enough to copy the html, css and javascript. It's digital so my labor was worth nothing. Small claims court? I didn't bother but I wonder how it would have played out.
I wonder how all the people who scream that any IP restriction is EVIL feel when they work away at OSS and make very little money. Did they see it coming?
Not that I'd advocate some DRM / IP technological scheme imposed by the state. It's not that you can't put the genie back in the bottle, there is no longer a bottle.