Re: .... second life....
Second life also showed that the human brain is more than happy to make up the missing bits when were staring at a 3d rendering on a flat screen and by the time Meta started burning cash, it was clear that people don't even want to wear polarizing glasses to increase 3D fidelity (see the massive continued success of 3D TV and Movie theaters, not)
I still want a VR headset, for games and flight sims it is rumoured to be fun. But that's a tiny marked, comparitatively.