Whether or not the distinction between "real" and "casual" gaming is real, there is undeniably a distinction between the sort of games that Microsoft currently

Whether or not the distinction between "real" and "casual" gaming is real, there is undeniably a distinction between the sort of games that Microsoft currently seems to be trying to sell through their App Store, and the sort of games that Steam sells. Surprising to very few, this distinction just so happens to align pretty damn close with the alleged "casual"/"real" divide. (Also, you've been able to dock laptops for years, that isn't some sort of neat "Surface-like-device" trick, yet all the "real" gamers that I know still own dedicated desktop machines. Their screens, keyboards, mice, and controllers are all bulky. Their setup is already the antithesis of portable, going through all that trouble just to use a docked underpowered device just doesn't make sense.)