Every single prediction is wrong because analysts are always wrong about emerging markets. This is nothing unique to VR. Instead it should tell you to ignore analysts.Every single VR prediction is wrong. In 2018 sales of VR devices were predicted to increase by 54 % in 2019. What happened? 20 %. Even short term predictions don't work. VR is a niche and it will stay a niche for the next ten years. Simply because the first impression of VR needs to nail it - and not have issues like SDE, cables, motion sickness. Battery life. Having 120 fps displays eats up battery life. That makes the devices heavy. That makes them uncomfortable. Plus they are isolating. They are perfect for singles, but families are not a good use case for VR. Well, unless you want a divorce.
It's highly unlikely to stay a niche for 10 whole years; you're saying this because you haven't looked into the deep D&D hardware advancements. You say that the constant iteration makes it niche? No, I say the lack of true breakthrough advancements is what has kept it niche, just like all other technologies that were niche in the past including PCs, phones, etc.