IP as we know it today is soundly in the way of the future many of us dream of. It wouldn't have allowed much of what most vociferously supports it in its current form to have ever come into being!
For a viable future we must reward creators and keep attribution when desired without limiting the freedom, creativity, and richness of the base from which we build new things.
A group claiming to be for creators needs to stand solidly for richness and breadth of creation - not the dubious over-protection of the creations of yesteryear beyond all need to honor and reward said creators.