If everybody stop pirating but don't want to pay, then they will flock over to copyleft materials. Suddenly, copyleft folks will make lot more money than people like ASCAP since some of them do have business models. As one HN reader puts it,
"The enemy of Gimp is pirated Photoshop".
Copyleft businessmen do have a strong incentive in having corporations implementing ways to make pirating copyright materials more expensive/risky, but not use it themselves.
In a way, the RIAA, ASCAP, and other copyright organization are unwitting accomplice in the rise of copyleft and copyfree entrepreneurs, however fews exist.