When was real-time ray tracing done in Movie production, since this is the first time it's ever being done to decent quality? Do you mean real-time feedback using a Ray Tracer in Movie Production aka Redshift or Prorender? Similar words, whole different meaning.
those demos arnt rendering the whole image in raytrace... just some passes and layering that on top of the game stuff... thats not the same thing redsift or any other GPU renderer is doing... Guerilla Games did similar things for Killzone3 years ago... https://youtu.be/_29M8F-sRsU?t=3586