What I am starting to worry about is Microsoft squeezing Sony out of gaming entirely. For a lot of casual gamers Call of Duty was the game or one of a few games they play and have played for years. A lot of those casual gamers own a Playstation. While Microsoft hasn't announced if Call of Duty will be exclusive or not, making the game PC/XBOX exclusive would be doctrine. The only example I can think of where they don't do that is Minecraft, so it is possible.