And beyond that, Pages for iOS has been on the top-selling (sometimes top-grossing) list most of the time when I was looking at it. On the Mac App Store, I wouldn't even be surprised if Apple was the top grossing developer.
Yeah, it's kind of like developing for the Nintendo platform. There are, of course, a handful of third party app developers who do very, very, very well. These are the outliers. Mostly, third party devs don't succeed and their apps are simply a selling point for Apple to use for the platform as a whole.
Actually, I'd be surprised if Apple was not the top-grossing developer on the Mac App Store. 8 out of 10 top grossing apps are Apple apps right now. (iPhoto?? Who has not gotten that with their Mac?)
