Some of these could possibly pan but probably unlikely yet still room to wonder about them abit. I didn't see any reason to add anything really off the wall like Nintendo buying EA type craziness.
MicroSoft develop content for the DS and PSP.
Nintendo cut a deal with RockStar to have exclusive 6-12 months of exclusivity on
GTA5,have Mario and the like appear in the game as unlockables.
Sony cut a deal with EA>Madden will be only be the PS3 for 1 year in 2006.
MicroSoft land a special version of GTA5 where it plays online,they develop the game for RockStar and market it all to hell in order to have exclusive rights to the game for the whole generation.