I don't think video resolution will increase all that much in the future, except for niche uses, as the resolution of the human eye becomes a limiting factor.
You may be underestimating the desire to earn through differentiation.
Assuming the product companies accept the plateau on resolution (I agree it’s likely), there are many ways to exploit the other stuff. Colour space, tacling each type of compression artifact, additional channels (probly not long until we have HDR RGBW), etc etc and those will each come with their committees made of patent-hungry companies seeing non-encumbered encodings as “undesirable”
I read "resolution" as pixel count more than DPI.
As it becomes cheaper to capture and process higher res content, we're bound to push it to bigger displays (VR included). I guess the human eye will be the limit when we're at retina levels of DPI on a sphere.
For distribution perhaps, but for acquisition it makes sense to have the highest resolution possible.
Pretty much. 1080p it very good, 4K is near perfect to me. By the time you can see the pixels you are WAY too close to the screen.