Why is optimization common for apps on iOS but not for apps on other platforms?
Because in contrast to other manufacturers, Apple reviews all third-party apps that are submitted to the App Store to ensure that they’re optimized for ALL iOS devices before they can be distributed via the App Store.
Because in contrast to other manufacturers, Apple hires developers to optimize all third-party iOS apps before they're offered on the App Store.
Because optimization is not a key value for customers who don’t have iOS devices.
Because it’s easier to optimize apps for the integrated hardware and software of the iOS environment than for other platforms’ fragmented device environments.