Everything wrong with Gruber's argument is right there in one sentence: "Microsoft is obviously trying to learn from Apple, but they clearly don’t understand why the iPad runs iOS, and not Mac OS X."
Of course Microsoft understands what Apple is doing — they just disagree
Undoubtedly some people at Microsoft understand. But equally undoubtedly some people don't and are clearly pushing a vision based on legacy products. Unfortunately for Microsoft those people win.
Everything wrong with Gruber's argument is right there in one sentence: "Microsoft is obviously trying to learn from Apple, but they clearly don’t understand why the iPad runs iOS, and not Mac OS X."
Of course Microsoft understands what Apple is doing — they just disagree