It isn't a problem with screen technology or processing technology or anything like that. We aren't going to "tech" our way out of this.
It is a biological problem and as such, I think the appeal of VR will always be rather niche.
Even the best selling VR headset that I found online was the Quest 2 and it "only" sold like 15M units (honestly way more than I ever expected) with everything else being considerably lower volume. Compare that to the number of Nintendo Switches sold (130M) and you start to see how small the VR market is. I am very curious to see how the Sony VR2 will end up selling. I would love to get a pair, but I think all these headsets will be short lived.