[MaximumMadness]

This is a great point - but you have to remember the money is what dictates games that go "mainstream". Companies like Activision, Blizzard, and EA are going to push out something that has low-risk, high reward (Call of Duty, Assassins Creed etc.) rather than push the medium of games forward.

They'll leave the interesting "games as an art form" type idea to indie devs, and once some idea or concept has broken mainstream, they'll snatch it and tag it to a well known IP (see Battle Royale + Call of Duty) and call it a day