> If they can't calculate it how do they know they're not losing money?
If they were losing money, what would they do? They probably can't raise their rates, since people are already very unhappy with their current rates, so it would be a hard sell given how much the company as a whole makes. They can't close the App Store, since it would flush their entire iPhone line down the toilet. Could they lower costs? Probably—cut back on reviewers, get rid of the promotional pages they create. I dunno.