The human race would still be sitting around the cave looking for bugs to eat if we didn't learn from good ideas and, basically, copy at every opportunity. The government artificially restricts certain kinds of copying to award and promote innovation, which makes some sense. Outside of those legal protections, it's "deuces wild". Copied designs don't deserve points for originality and, as many have pointed out, you're free to buy or not, but what matters to most of us is not whether something was copied--which is natural and common--but whether something was copied well. I think the whole "It was copied!" argument is just a lame excuse to criticize that which challenges one's precious little notions.