SEGA released http://en.wikipedia.org/wiki/Binary_Domain for PS3 and 360 not long ago, and the PC version is coming later this month, and all the 3 platforms have support for voice commands. So it's certainly possible.
I do guess that the 360 version is easier to do though, the Kinect API probably have some nice voice functions the developers can take advantage of. So a lot more work would need to be done for the PS3 and PC versions, while it was relatively easy on the 360. So in the end I wouldn't bet on it coming to PS3 and PC.
Oh, and Binary Domain is an extremely good single player shooter btw, if you want a shooter with a good story I highly recommend it 