I think Ed needs to clarify: a 4K stream when it gets starved for bandwidth. And all the macro blocking and mosquito noise starts. Then yes, a DVD can look better at that point.

And that is kind of the point don't you think. We have no control over the bottlenecks our video streaming is going to face. We are never guaranteed of the quality. With physical media, we are always going to have a consistent good experience. But nobody cares about that anymore. And that makes me very sad :(