It's not what they "typically" do though. When they switched from the old PowerPC architecture to Intel, they provided emulators, and _IF_ you use Apple's libra

It's not what they "typically" do though. When they switched from the old PowerPC architecture to Intel, they provided emulators, and _IF_ you use Apple's libraries, a simple recompile of your app would often be enough. While some people see it as restricting them, Apple mostly works hard to make their libraries do whatever people needs them to do, but at the same time they keep control, meaning moving to a new architecture is as easy as Apple fixing their libraries, ship a new version, people recompile, and done.