Did you actually try taking legal action, e.g. get a lawyer to file a DMCA notice against Apple? It seems like the most obvious thing to do rather than simply talking about it on the internet. Apple has absolutely no obligation or reason to do anything about the copyright infringement (not theft) until you do that one single step. If they had to investigate every time someone claims on the internet that someone is infringing on their copyrights, they'd never get anything done.
We spoke with several lawyers, one of which was a supposedly big-wig law firm in Chicago. Bottom line, nobody wanted to take Apple on and all of them told us we were pretty much on our own, you know, unless we have
really deep pockets. Well, we don't.
So, we sent cease and desist letters. Twice, because Apple ignored us completely the first time and the second time, they said they would "look into it" and of course they did nothing. We basically resorted to harassing Apple a bit until we finally gave up because they wouldn't follow through and stop selling stolen material. Our material.
Apple, as it turns out, is immune from the likes of us.