Tomb Raider was on 360, Xbox Saturn, Dreamcast, N64 and even Gamecube why should it be a Playstation IP?
Loyalty is a fanboy thing not a corporation thing. Corporations will make you believe about their loyalty but only one thing is important to them and that is making money.
There were other Final Fantasy games before 7 you know and they were on Nintendo consoles.
Corporations are too attached to names (people too though) and if a name did brought them money they will use that name over and over again (example Forza and Forza Horizon, the Tom Clancy series etc). But if the name didn't brought them money they will stay away from it... Shenmue.
COD... in case you didn't know, COD was the best selling franchise on Playstation 3 that means PS gamers cared more for shooters like COD than games like Uncharted, any RPGs or adventure games, any fighter or racing games, any indy, any sports etc. Don't act like shooters are just popular outside of PS, that's a big lie.
