Except as has been pointed out over a dozen times, you have to use the keyboard attachment that basically turns it into a laptop to play games other then touch screen based ones. Then there is the weight factor, it is 2lbs by itself, have fun holding that up for an hour. So why should someone spend $1k+ to play touch screen games on a tablet when you can spend $300 for a different tablet?
Cause $300 tablets suck. I've owned an Android and the damn thing is so limited. Not to mention the sheer hours upon hours of reencoding videos for it to work with the damn thing. "1080p capable" my ass. I have to encode everything to be 7k or lower bitrate, just so it runs smoothly and even then, it doesn't properly sync the audio/video when connected to bluetooth speakers.
Me personally, I picked up an Acer W700 for $1100. Does everything my old $500 Acer A500 (costs $350 nowadays) and does a much better job. It also does everything my old HP TM2T laptop/tablet does and does it faster. I play touchscreen games on it and I also have an Xbox 360 controller that I can use with it for other games. Although, it's only packing the HD4000 graphics, so old games are all I can play. Not that I bought it to game with.