>games have done 24fps for a more cinematic look

One high profile game has done that, The Order 1886, and it was widely agreed upon that it was the worst part of its "cinematic look" (which 99% of it was reached with simply letterboxing, film grain and other effects).

Movies that are 24fps do not have very fast moving cameras like games do. Animations that are done at 12FPS still run at 60FPS: I can move around a given character, and for 5 frames, from all different angles, they'll still be on their own animation frame. I won't, however, be stuck for 80ms waiting to be allowed to change my position.