I don't understand why anyone cares about Netflix 4K. Their regular HD video bitrate maxes out at 3.9Kbps, apparently.[1] Their "Super HD" takes you up to 6mpbs. OTA television signals are at 18mbps.[2] And Blu-Ray can go up to 40mbps.[3] Increasing the number of pixels without increasing the bitrate doesn't really fit any more actual picture info into the stream.
1) http://blog.streamingmedia.com/2013/09/netflix-doubles-video... 2) http://en.wikipedia.org/wiki/Advanced_Television_Systems_Com... 3) http://en.wikipedia.org/wiki/Blu-ray_Disc#Bit_rate