Sorry... wrong. They are WAY more than payment processing. iTunes and the new Newstand is a channel. It's easy access to millions of potential customers and that is worth the 30%.
Nope, there is nothing more than payment processing in the 30%. All marketing and channel distribution is done by the developer for In-app subscription. Apple does no channel work or newstand work. You need to provide your own app, market it, and then are in charge of managing accounts, distributing the content through your own channels. All Apple does is process payment and tell you XX has paid YY$.
You're talking about something else entirely, the Newstand feature in iOS 5.
So wrong yourself bub.
LOL! Again... you do realize Apple is not a Bank? They too have the pay credit card processing fee's when a transaction is done. Visa, Mastercard, AMEX all get their cut along with the actual processor that Apple uses.
No where close to 30%.
If Apple provided more than just a payment processing (they don't provide any channels for in-app purchases or subscriptions), then you'd maybe start having a point. As it stands, you don't.