That kind of policing of copyright laws is carrying an originally good thing far past the point of ridiculous!
What kind of designer does this? And why would anyone think they can have a say in how the consumer uses their fabric? Shouldn't they feel honored that we like their fabric enough to buy and use it?
I'm with you all - boycotting these fabrics and letting the shop owner know why you are doing it would send a clear message. It's not like there isn't so much other wonderful fabric out there to choose from that we could never fit it all in our homes.