Then, imagine a Hololens TV set, where 3d is the standard, and surround sound is also standard, and where you get 360-degree viewing of a movie. YOu are not just watching a movie at that point; you become immersed and could be interacting with what you see.
What you are describing is a VR experience, not the "augmented reality" experience that the HoloLens is designed to created.