... And since their products sell extremely well, it would appear that the market has decided they're not overcharging.
First point not withstanding, isn't this part true for Zynga as well? They have many successful products, even if some were probably stolen ideas with better marketing.
Apple will steal without remorse with one hand, and use costly litigation to squash competitors with the other. Although I think Apple contributes more originality and innovation than Zynga ever has, they aren't that different in some respects.
Not sure that makes the comparison valid - especially now that Zynga appears to be dying - but it's not one that I would immediately dismiss either.
EDIT: I hate these fucked up forums. They always change spacing and font size on me when writing a response, and now they won't let me close the quote. Whatever. I don't have an issue simply editing text with any forums outside of NWR, and conversation here isn't important enough to really matter... it's just frustrating when automation prevents you from doing something simple.