Kenneth Glazer in AllThingsD, points out the obvious in Adobe’s alleged complaint about Apple’s monopoly:
If … Apple has only a 25% share, they’re well below the threshold for a monopolization claim and also below the threshhold for an attempted monopolization claim. You’ve got to be at least 40% to be within shouting distance of an attempted monopolization claim. I don’t see how they’re going to be able to prove a monopolization case against Apple if smart phones are the relevant market, unless you can carve out a narrower antitrust market in which Apple has a larger share.
Adobe’s complaint is pure noise. They’re really complaining that Apple has a monopoly on the tools used to develop apps for the App Store.