They just aren't very good at it. Microsoft is a great example of why ads and marketing alone don't sell products. The amount of money put in to Surface, Windows Phone, Zune, and whatever that other phone thing was is just staggering.Why is it every time I see an Xbox One ad, I want it less and less. I mean, I'll prob buy one when they drop Kinect, or drop the price at least, but I don't know what it is about MS' ads that just put me off.