Isn't there a cost to hosting all those apps, distributing them on the fastest data pipes, spending R&D to create better development tools as well as the marketing and all else needed to have a thriving installed base? Thats at least 15% they need to charge to recoup that. You also have to take account the obligatory Apple tax. Thats another 10%. And because you have a problem with it and all the other App ecosystems are lame, theres your extra 5%. I award Epic no points. And it deserves what it gets. They are free to make their own devices. The 30% is probably to discourage the biggest companies from creating entire businesses on Apples platform. Because the more of those that exist the more power they have over Apple to force them to go into directions they do not want to go towards. They already had that problem with microsoft and adobe, and you see how that turned out. By making money hand over fist on the iPad they reduce the income hit they could have if a huge enough player pulls out of their App store trying to strong arm Apple. That has happened in the past with the Mac and this time, if Apple will go through that again they will look at how much money they made from whoever does that and shrug and move on.