I imagine at one of these 500+ companies the majority of those are in the art department. I'm thinking about say DICE. DICE has made essentially the same game

I imagine at one of these 500+ companies the majority of those are in the art department. I'm thinking about say DICE. DICE has made essentially the same game (battlefield/battlefront) about 10 times. The 3d engine does get upgraded game to game, but clearly the majority of the delta between games is simply the art.