Well even with all the available competition most developers seem to consider the 30% fee on Steam fair enough to host their games there. So maybe that 15/30% is not as ‘massive’ as one might think, especially considering that the app store model was massive improvement over what existed before them. Not that I’m a huge fan of closed ecosystems in general, but I’m not sure the government should dictate what sort of software features manufacturers should implement on their devices. Especially considering that most consumers don’t really value the ability to freely install any software they want on their devices and seem to be fine with the closed garden approach.