Every game? come on now that's such an extreme and unfounded fear lol. Actors have been featured in games for a long time. The capture technology and techniques are just getting to a point where the actors looks more and more like their actual selves. With video games now being a premiere form of entertainment media, naturally it'll attract more prominent actors from films, as the mediums overlap a great deal. This doesn't spell the end of games with more stylized art direction, that's silly.
Between the AAA sector and indie sector, there are more types of games being developed now more than ever. Many with unique art directions, many with more conventional art directions. There was and will always be room for any type of game within the industry, given there's an audience for them.