We'll see about that (with respect to pixel density and efficiency). I'm typing this on a 4k xps 15, and while the display is great, the battery cost is extreme. There would be no meaningful advantage in an 8k-display of the same form factor, so there is far, far less incentive for manufacturers to race to 8k.
there will be 8k tvs, sure, but lets be real - the step to 1080p was massive, the step to 4k already couldn't fit in those shoes.
the step to 1080p I'd say that, for some, could have been seen even as a downgrade. It was possible to use 1600x1200 back in the late 90s and early 2000s, with CRTs.
The concept of "high definition" was already known by PC users (gamers and professionals, that is)
4k is a nice upgrade, and I'd say that many professionals already were using it with proper monitors
there will be 8k tvs, sure, but lets be real - the step to 1080p was massive, the step to 4k already couldn't fit in those shoes.