Wireless, Sony...
Wireless.
I seem to remember a bunch of people saying the next PSVR headset was the reason for the WiFi6 inclusion in the PS5. Ah well. That said, I have no doubt it'll be a great piece of hardware for those who enjoy VR.
It's not
the reason. (Other than cost, there's not much reason not to have Wi-Fi6 now that it's available; AX has been out a little bit and WiFI6 is just a renaming of that.) Strong, up-to-date Wi-Fi is core to everything a console would do online wirelessly.
It would have been the reason if the PS5 included Wi-Fi6E, which is basically an extra Wifi bandwith (6GHz) that's only good for short distances but is incredibly good over those short distances and would make wires essentially pointless. Would have been perfect for wireless VR or a PSP-type in-home controller.
Doing wireless VR with just Wi-Fi6 is still doable (people are already doing it with their Quest 2s.) I don't know though how strong the PS5's onboard Wi-Fi gear is to support that level of performance?
(Sony could technically build a PSVR box that's a Wi-Fi 6E module or just a 6GHz connector if that was a determining factor between wired or wireless, but I don't know what the pricepoint would be on that, plus you'd need a second Wi-Fi 6E/6GHz chip in the headset as well so it'd add two costs.)
A mobile chip inferior to a PS4 in power will not match PS5VR. The console uses 200W in games and Quest runs on a battery. Maybe in 10 years we will have a Quest with PS5 capabilities.
We're not talking about a self-contained VR headset; we're talking about a PSVR where the IO is Wi-Fi instead of Wired.
PSVR2 would still be a PS5 accessory, it'd still only work in your home (though I have heard of some people trying to log into their PC VR over the internet.) Not like Quest 2 where it can do either internal game processing or tethered-to-PC play.
Wireless PSVR would still need enough hardware to do
A. all the basic video signal processing of two high-resolution displays at 60-120FPS (which it needs either way),
B. a Wi-Fi chip for a local remote connection, and
C. a battery.
So, all told, it would be more costly (and heavier) than a headset that's just a playback-and-motionsensing device, but I don't believe it would have to be Quest 2-level hadware specs in order for the headset to be viable. It'd need a good video processor, but not all the rest of the gaming hardware since PS5 handles running the game.