Regarding your last paragraph: I wouldn't be surprised if existing "upscale" chips already work similar to what you suggested: They convert lower res content to

Regarding your last paragraph: I wouldn't be surprised if existing "upscale" chips already work similar to what you suggested: They convert lower res content to (for example) 4K. See https://www.sony.com/electronics/4k-resolution-4k-upscaling-tvs https://www.sony.com/electronics/4k-resolution-4k-upscaling-... for an example.