So we really reached the limit for graphics quality havent we?

With that I mean the level of polygons, textures, lightning needed to make something look photo realistic, but we're stuck with the power needed to run all that in a dense environment while pushing for higher resolution and FPS?

At least thats what it looks like to me.

Have to upgrade the human eyeballs/brain for the next level of fidelty

It'll probably keep getting better, but at a slower rate