You're right about starcraft - it's a well designed game constructed explicitly around the keyboard/mouse paradigm. Fortunately it's not the only type of game - if you look at the list of best selling video games, they all have a variety of control mechanics that work best (Starcraft with keyboard and mouse, racers with steering wheels, angry birds with swipe etc) and almost none would work as well with another control mechanic. The idea of a smartphone controller is pretty young still - its natural that there arent best selling titles that use this control mechanic; it hasnt been around long enough and not too many folks are focused on it.
(disclosure - I'm a founder of wanderplayer).
thx for the comments/feedback.