I think it ultimately came down to this... "It was also not pleased that Microsoft had built its own system to interface with Google’s ads so that they could b

I think it ultimately came down to this... "It was also not pleased that Microsoft had built its own system to interface with Google’s ads so that they could be delivered to the application. It might break, and so forth." It's still douchey of Google to outright block Microsoft, since the original Apple made version of YouTube only shows videos that do not want advertising (granted a smaller and smaller # of videos).