A lot has to do with how it is framed. I think Apple would have less pushback if they charged 50% and told developers, we're providing the devices, the user bas

A lot has to do with how it is framed. I think Apple would have less pushback if they charged 50% and told developers, we're providing the devices, the user base, the app store, the promotion, the dev tools, the payment processing, you're providing the app. We each need each other so let's split revenue 50/50. Seems it would be tougher to argue that, than 70/30 which is an arbitrary declaration.