In losing, Apple is likely to wind up under significant antitrust oversight. Given some of their other business practices (like the app stores), that could be a big issue for them.
The app store is clearly nothing to do with any kind of monopoly, however much people would like the government to force Apple to make it what they want.
However, I agree that antitrust oversight would be harmful for the Apple, and indirectly for the industry as a whole.
