You need to have a look at what our copyright laws actually are for songs and written works. The international standards now allow the revenues from a song to persist from copyright well beyond the lifetime of the person who actually wrote it. So people who want to use that song and download it, etc., have to continue paying for copyright privileges, perhaps for a generation after the person dies. Is that really going to encourage more singing?
You may well be right that maybe these people will keep singing no matter what, in which case we don't need any copyrights on songs, do we? You have to find a median ground here that makes sense and rewards people who are innovative and creative, but that doesn't saddle the rest of us with paying for the privilege of using their innovation and creativity forever—and which doesn't let them rest on their laurels.
I'm willing to believe—