Unless the PS3 heavily bundles the PS3mote, it's going to have a tiny userbase. At most 25% of all PS3 owners, which will be around 40 million by then, or 10 million PS3motes. In order to port from a Wii to a PS3 you're going to have to basically remake the entire game (redo all the graphics for an 'HD' system)
I don't see companies spending money to upgrade their graphics just so they can sell to an extra 10 million people, maybe.
Wii has more 20 million sellers than PS3 has 5 million sellers.
Acolyte of Disruption








