30% is outrageous
Apps are what make a platform, and where mobes are concerned, it is what makes them more attractive than the competition.
Apple is imposing a luxury tax on developers when they are the ones who bring value to the entire Apple ecosystem. What have I just read about HTC ? It has crap apps. Doesn't make me feel like buying a phone from them.
As far as apps are concerned, Apple is just a facilitator. Yes, it provides the App Store, but don't try to make me believe that that is costing Apple $100Bn/year.
The normal fee of an intermediary is 10%. That is what Apple should have the right to ask for.