That is because windows 8 was designed around tablet, light notebooks, and mobile more then what a PC gamer needs which is low ram, low resources, background OS usage when playing games. Todays gaming community, hardcore gamers, or pc gamers who use the pc as their platform of choice will be playing on a desktop or laptop with a separate video card. They are not worried about power consumption, mobile apps, wifi or 3g 4g support they want an OS that when a game is launched goes into as low resource mode as possible to allow for as much ram and processing power to go towards the game- well like a console.
Don't get me wrong there is a need for mobile, tablet software but if you want adoption by gamers, design it around real games, not farmville.







