At some point in the future, people will no longer be looking at physical screens. Somebody might look at a virtual screen in order to simulate the experience of looking at a physical screen, but that will be a software construct.
Eventually, the entire idea of screens may fade away, replaced by something that is much more natural and immersive and closer to the way that humans communicated before TVs and computers came along.
When that happens, future generations may come to see our old fashioned movies and TV shows as quaint, or even unwatchable. Maybe the old content will need to be processed to make sense to future generations.
Old black and white movies are sometimes colorized to make them more palatable to modern audiences. Maybe the same thing will happen with flat screen movies and TV shows. In order to make sense to future modern audiences, they will need to be volumized.