The problem though is that the developers drive the games, and ultimately the system sales. Resources have been diverted from the PS3 (and possibly the 360) due to how insanely well the Wii has been selling. Now the devs are playing catchup, and they've openly admitted it too.
Hell - look at the next core Dragon Warrior game. It's being produced on the DS for cripes sake. The game series that is so powerful (in Japan) that they actually passed a law that required the game to be released on a weekend (to avoid large percentages of the population taking the day off of work/school) is coming to a portable system simply because it's the most popular system.
If that doesn't show you that developers will jump to the most popular system to release their games on, nothing will.
On a side note - I sure hope it was Dragon Warrior and not Final Fantasy (about the law passed thing), as otherwise my whole argument just became bunk.