Microsoft decided that a great way to get apps for their phone would be to make a UI for both desktop and phone and force developers to use it. In a single stro

Microsoft decided that a great way to get apps for their phone would be to make a UI for both desktop and phone and force developers to use it. In a single stroke they alienated all their existing desktop developers while forcing potential phone app developers to have to think about far more complex problems. Their message to developers was that they must learn something new. And so they did. XCode.