I think the "overstimulation" thing is a bit of a sleeper issue. At first people think "wow it's so awesome I can be sitting on the moon while I browse the web

I think the "overstimulation" thing is a bit of a sleeper issue. At first people think "wow it's so awesome I can be sitting on the moon while I browse the web". But after a bit of time you just get tired, and I think it's precisely because your whole brain is working in overdrive to understand the unnatural environment you are in. None of this manifests explicitly but at the end of it, when people are faced with the choice of putting the headset on or not, they just "feel" like it's a lot of effort. I say all this as someone who does regularly spend 1-2 hours working in Immersed with multiple giant screens up. And I love it as a break, a way to focus or just relieve the boredom of working in the same space day in day out. But even I feel this effect of it being tiring and not keen to do it for 8 hours a day. And the minute you say that, you lost the use case of this being your "only" computer / replacing your laptop, so it's actually kind of crucial to its central justification as a replacement for a computer or a 'new kind' of computer.