User blog comment:Deathmanstratos/RUMOR: Activision may switch Call of Duty's Lead Platform to PS4/@comment-1382861-20140319024209/@comment-1187559-20140321034724

Also, putting economics aside. It's generally a good idea to build your game with 1 console in mind, so you know what limitations you're building for. Like if you're making a game solely for PC, you have a lot more limitations to work with. Which is why many PC-only games won't or can't be ported to a games console. In the case of a multi-platform game like CoD, it's better to build it for a console, than port as needed. While a game could have individual teams building the game for different platforms, it would take more staff, time and costing. And given CoD normally has the 2 year build time, there simply isn't the time to have a CoD built for all platforms without one being favoured.