I’m so tired of this Apple tax, I think nobody would be this annoyed if Apple were saying 10% or something around that. 30% is more than most companies pay in tax on profits and this is a tax on revenue. I don’t think abusing your market position like some kind of protection racket should be allowed and if you don’t like it we’ll delete your App is quite frankly just as bad as the mafia smashing in shop windows. I doubt anyone will stop them but we can hope…