Here's my argument: tough titties. Everything Greg Rutkowski has ever drawn or made has been inspired by other things he has seen and the experiences of his life, and this applies to all of us. Indeed, one cannot usually have experiences without the participation of others. Everyone wants to think they are special, and of course we are to someone, but to everyone no one is special. Since all of our work is based upon the work of everyone who came before us, then all of our work belongs to everyone. So tough fucking titties, welcome to the world of computer science, control c and control v is heavily encouraged.
In that Beatles documentary, Paul McCartney said he thought that once you uttered the words into the microphone, it belonged to everyone. Little did he know how right he actually was.
You think there is a line between innovation and infringement? Wrong, They are the same thing.
And for the record, I'm fine with anyone stealing my art. They can even sell it as their own. Attribution is for the vain.