Microsoft did worse, they did charge more than 30% to everyone that published software for the xbox.
People with skin in the game, game publishers, game developers, mobile app developers for nokia, blackberry, samsung, motorola, etc, considered Apple taking "only" 30% to be an excellent deal at the time. It was so good in fact, almost all other store splits collapsed shortly thereafter to the same 30% to compete with Apple.
Others complained, sure. I too complain Ferrari charges way too much for customizing the color of the thread of the interior lining on their cars, I don't know why they don't seem bothered.
There were a range of valid opinions held by intelligent people who had "skin in the game" seems to me to be an utterly uncontroversial statement. Your unsupported list is also only one segment of one particular kind of stakeholder in that market. I think this has probably now gone past being useful to anyone if you agree I wish you the best. Otherwise enjoy the last word...
Apple, however, transformed the phone industry by bringing that same model to mobile that had already existed in PC/console game storefronts.