I thought it was the other way. That 8k is problematic because the chance of dead pixel is so much higher, driving up the cost because of the higher ratio of ruined batches?
Hmm could very well be. With DRAM I know error rates are roughly constant, so actual per bit rate goes down as capacity increases. Perhaps its different for displays.
I mean my local cable TV is sending crap that's way worse than 720p YouTube videos and most people don't care at all.
I guess the primary benefit of an 8k display is that stuck or dead pixels are much less annoying than on a 4k panel of the same size.
I'm fine with 4k for my living room. Give me more HDR, less chroma subsampling and less banding.