Well obviously we want all platforms of any kind to have top notch games, but there are two major problems here:
- hardware, you just cannot stuff a tablet/smartphone with the top tech, unless we grow hulk arms that can carry all that shit
- ergonomics, a mobile device needs to be very compact so the controls get cramped and mostly shit, and you haveto try to hold the screen in a comfortable viewable position for several hours, making high end games a pain in the butt
Cloud gaming could some day bridge the hardware gap and we will be able to put our games on any device, but until then mobile platforms really lend themselves better to simpler games.