Anyone could have explained that people don’t want to wear a Super Nintendo on their head. It seemed more like a “best we can do right now” technology testbed, or supply chain resource, than a real product. I assume they learned everything there was to know about building it and what it turned out to be good for.
I volunteered to help evaluate the HoloLens at one point. My feedback was that whatever the dream was (checklists in your field of vision, etc), you can do that yourself and get all the value, and the headset didn’t add anything.
Also my experience with VR and AR for the most part. “Do you want to do what you do now on your phone/computer except be extra tired?” is basically the sell.