My guess, based on my knowledge of games and my brief exposure to UX:
Playtesters, QA, etc fill in the role of UX in the games industry, I would think.
That's in terms of UI. As for new products and experiences, this industry is mostly churning out shiner new versions of old game genres (like hollywood) but with a higher polygon count or RAM requirement. It's not that a UX mindset wouldn't help create better types of games - it would - it's that innovation might be less valued than ever in mainstream videogaming.
Indy games would love UX designers, but most of them barely have budgets for developers, so UX kind of is not a thing in videogaming.