I doubt that M$ is going to throw the baby out with the bath water....there is a huge player base for CoD on PS consoles...it will depend on if they want that immediate money or just want to hold millions of CoD fans hostage in order to boost console sales
i can't say that i care if they make CoD an Xboner exclusive...i wasn't going to buy it anyway
also, for being worth 70 billion, Activision doesn't really have an impressive lineup of IP