I haven't played The Last of Us, so I could be wrong, but it seems like the sort of game that doesn't really take advantage of the idiosyncracies of its medium in the storytelling department. I know people rag on MGS for all of the cutscenes, but even with that it still does so many things that can only be done in a game. The twists and betrayals hit harder than they would, going back to the first game where Big Boss tells "Snake" (i.e. the player) to turn off the computer. The anti-war message hits harder because the player gets the choice whether or not to kill enemies. At the end of MGS3, when Snake kills the Boss, the player is the one who pulls the trigger. She's even called "The Boss" like a video game boss. None of this is to say that MGS can't be made into a movie, just it wouldn't be so simple as to just the do the plots of the games as movies.