Interesting take, but I kinda disagree. I'll explain why and bring it all back to Ready Player One (hopefully).
I think the next big steps in VR/MR is going to be an untethered, backendless simple to use setup that everyone can afford and anyone can use. As long as it remains hard and expensive it will be less likely to go mainstream. The idea of having to put on additional suits and gloves etc is akin to the rumble chairs, haptic vests and 3D glasses...normal people won't do it until it's simple and easy. There are already "iron maiden'esque" devices that you can strap yourself into, pop on some slippery shoes and go for a run in VR...but that hasn't (and likely won't) take off for mainstream users.
So back to RPO. There were (at least) two kinds of "players" in the movie. Those that were fully kitted out and strapped into chairs or other physical contraptions, wearing haptic suits and gloves in addition to their visor. Then there were the normal people, wandering around untethered on the street, on the couch etc. with seemingly very little hardware, or setup required.
I think the latter has to be the next big target for VR - except for the wandering around the street bit but I've already expressed my views on that aspect