The Infamous Joe sez: I would also like to point out that even "bar bands" can make a popular song that "will require collections in the future". Many musicians start out in a bar (or garage, even!) and go on to "make it".
Yes indeedy. Like those four lads from Liverpool for instance.
We can pretty much ignore what ASCAP, RIAA and even ASSHAT have to say on the subject. A Creative Commons license is, contractually speaking, perfectly legal.
For the performing and/or recording musicians out there, just continue doing what you think is right and trust your fans to show you some love. If you have fans, they will show you some love.
For the folks who write songs for others, I acknowledge that it's a bit tougher situation, but thinking creatively (err... pun semi-intended) will get you into the same situation.
In fine, let the dinosaurs sink happily into the tar pit. Pretty soon we won't even be able to hear their roars of panic.