Why doesn't PS3 do more with the Siaxis promotion and development ala WII?

[davidxiphoid]

Sorry if this question has been posted before, but with the Wii still doing ridiculous sales why doeesn't PS3 emphsize and make more wii like games with theyre wireless and siaxis capability?

For instance, I've played the wii.. it's fun, it's cute> but a good demo would be ps3 High Velocity Bowling VS wii bowling. Just as fun, but the graphics are far and beyond anything wii could ever come up with. My friends who have wii's have said the same thing. They play HVB and love the hell out of it along with the exclamation in regards to the movement control "I didn't know the PS3 could do that"

Just wondering if there is a legit reason, technically or monetarily speaking.