It just depends on how important Sony and MS try to make them. I mean Eyetoy and Live Vision camera really never took off. No 3rd parties really went deep with them or whatnot. Yet you see something like MotionPlus come out on the Wii and EA and Ubisoft are both releasing games that are bundled with them. That just shows the complete difference in importance that devs are showing right now.
It's quite possible that they could take them very seriously in the future but only if MS and Sony do the same. Possibly for their next systems even making them the standard with the other controllers (like Ninty) being the optional ones. If that happens then yes developers support would be large.
Right now from MS and Sony we've only seen prototypes and what they want to have happen but nothing concrete or solid. Nor do we see a complete backing of the projects. I say we wait til 2010 to put further judgment on this which would in turn put the judgment on whether or not they will put the Wii games on PS360 later on as well.
