How long did it take for consumers to go from 480p to 720p to 1080p? 4k+ provides little benefit for the average consumer because TVs aren't quite there yet but with VR/AR on the rise, how long with that remain true?
There are also huge network effects which may cloud the benefits, until suddenly some mass market consumer application makes it blatantly obvious. Youtube and Skype are so successful because a significant portion of the world has access to fast Internet and microphones/cameras to the point where I can talk to my grandparents in rural Russia despite not being able to visit them in person for almost a decade. What if our Internet was fast enough and our displays cheap enough that working remotely or across international offices becomes as simple as installing several wall sized monitors in geographically spread out rooms? The display tech will get there eventually (just look at the stuff Corning is working on), but if there isn't any infrastructure to utilize the tech it will take much longer for mass adoption. It's a chicken and egg loop but while the technology improves, we have to make the positive decision to invest in infrastructure even if the benefits aren't immediately clear.