That's not all. Microsoft is late to the small-screen party.
"On screen sizes, one of the things that really hurt them was at the precise time they were launching Windows RT and Windows Pro into the market, the tablet market shifted toward smaller sizes, particularly when the [iPad] Mini came out [in November]," according to Mainelli.
He continued. "Right when this was happening, Microsoft launches 10.6-inch tablets. You can make the argument that in order to be productive that's the size you need on Surface. But from a market perspective, the market has shifted small."