From what i've heard though... the average Wii game has about 15 dollars go back to the publisher or so... as over 50% go back to the publisher but you have to pay for physical production costs too.
PS3 despite costing 10 dollars more i actually believe net less per copy to it's publisher to do blu-ray discs costing more and PS3 liscensing fees being reportidly higher by a pretty decent degree. (which may explain why companies like capcom are screwing europe or atleast suggeting the stores do.)