What differentiates iOS
Confidence. Anyone can use iOS and feel confident. In a matter of seconds they can launch applications, create art, browse the web, write emails, and play games. This is why the iPhone is so successful - you really can’t screw up anything. Compare that to the PC industry. PCs (I’ll include Macs) are confusing for most users. Confusion creates self doubt and then fear, fear that they’ll break something while trying to accomplish a certain task.
Contrast that to iOS where they don’t worry about where you saved the file, or how to play music, or how to ‘burn’ a DVD. iOS breaks down the walls that have stopped people from using their computers. And when you remove those barriers it creates confidence. And users like to be confident in the tools that they use. So they buy tools that make them confident.
I have more confidence in my Mac and my iPhone now than I did in my Dell and my Nokia. Apple sold me on confidence.