I don't think there's any doubt that bebop's light set was not constructed independently. The evidence is convincing. However, I would have thought that the opinions of Curious Labs in the matter were worth taking into consideration. Lawyers or no lawyers, Poser is their business. They need to take IPR into very serious consideration. I don't think whoever wrote the copyright law ever knew about Poser, so a pragmatic approach is necessary. This is only my guess, since I have no contact with bebop, but I suspect that this act of distributing that light set was more of a protest against the idea that a light set should be copyrightable than any regard for the quality of that light set in particular. As I said in another thread, I wouldn't use that light set ever, I have no interest in it. But I am worried that someone will start claiming copyright on basic poses, and claim some of the arguments above as precedent.