Since you don't seem to know the book or care to understand my point, I'll keep this post anyway: You don't mainstream technology via your early adopter market. To succeed you need to mature tech and adapt it to a general market.
So the fact some rarely-enforced children protection laws or hypothetical cultural parenting rules might hurt VR IF the only market was merely kids in the long run is bad, sure. But that's not what I said matters in my original comment.
VR's market in the future isn't casual gaming for kids. My point is that's all it is now. And for that it's doing a great job and has a real lively market to fund the tech. Your fears haven't born true for early adopters (because it's fundamentally a hypothetical mainstream critique), so it doesn't really matter, as long as it's sufficient fuel the tech til it bridges the gap and the tech matures.
(Edit sniping is your problem, my goal isn't to win fast-paced internet arguments but to communicate my points as well as I can)