on Apple’s case, means good app experience for the users and the developers. for example, SwiftUI comes to iOS 13 or later. If most devices were to be left off without updates(which is the case with Android) most developers would be hesitant to pick up the newer shiniest technology. apps on android still tend to be ugly and old fashioned. sure, there’re exceptions but generally apps on iOS are fresh and consistent probably because developers can depend on the users having the latest platform.
