I also feel the VR enthusiast community rarely has an honest conversation about the size and scale of the nausea problem. I'm not sure its just a case of throw ever increasing fidelity at the picture and audio etc - I think its the fundamental issue of walking motion being perceived by eyes, but inner ear balance indicate you are stationary. Even at 600fps and 20k of resolution per eye this disconnect between visually perceived motion and actual motion is still going to exist.

AR obviously doesn't have these issues and I think will one day be great, but VR could have this problem for decades.