Moving to ARM has nothing to do with moving phone apps to desktops.
Almost all iOS apps already run natively on x86 today. When developers use the iPhone simulator they are running natively compiled apps linked against an x86 version of the iOS framework. If all Apple wanted to do is allow iOS apps to run without any usability changes on Macs that would be easy (and ugly).
Almost all iOS apps already run natively on x86 today. When developers use the iPhone simulator they are running natively compiled apps linked against an x86 version of the iOS framework. If all Apple wanted to do is allow iOS apps to run without any usability changes on Macs that would be easy (and ugly).
There are already x86 based Android devices.