This is unrelated to viewing experience. On the technical front, clean 4K can be compressed at a greater compression ratio than equally clean 2K or 1920x1080 material. This means that transmitting compressed 4K might not be all that difficult. I haven't done the math at all but I wouldn't be surprised if you could to really good looking compressed 4K at just over the HD data rate. This was studied and presented in a paper over ten years ago (guessing from memory) as high def telecines and scanners started to come into the scene.
-Martin Euredjian
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