You kinda answered your own question. If no one is materially harmed, they have no grievance. I think I was clear earlier: I'll defend my home as I see fit. I do not care what you do. It does not affect me, or anyone else. What is in my home is not your concern. What is in your home is not my concern.
Where you put your pecker is not my concern. What you eat, drink, watch, ingest, or partake in, as long as it does not materially harm another person, is none of my damn business.
As regards your "billionaire" question... how ironic. You mean billionaires that aren't world leaders?
Private owners? I guess the scientific community would have to get involved there. Again, market forces might dictate that. But truth be told, there's already a black market for those type of things. Kinda hard to stay on the DL when you're buying a nuke. It's not something that one person can do - requires a team, and that's tough to assemble without someone blabbing. Market forces would rapidly "link up" to restrict that person's craziness.
Traffic laws? Absolutely. Most of them are redundant and illogical. The free market has a remarkable way of governing behavior, based NOT on a fear of punitive action from an impotent bunch of elected idiots, but on a market that will demand retribution in the event of trespass (insurance companies, attorneys, and civil damages). If you're not going to ticket someone for 1mph over, don't ticket anyone. Speeding is speeding. If there's an acceptable overage, take the signs down, or edit them. It's idiocy, and we've been brainwashed into thinking it's logical. We could go on about this, but it's a different topic for a different thread.
Your "rant" about the other drivers operating in an unsafe manner is lightly flawed. See, you alone are not the determinant of what is safe, unsafe, legal, illegal, or 'idiotic.'
Did "all the other idiots" crash? See, a crash would be prima facie evidence ("Hey honey, what's that mean?") of unsafe actions. If I take my mother to a SCCA event, she'd think all the drivers had a death wish or were drunk - when nothing could be further from the truth.
Are you an idiot, or are you 100% by-the-book when you drive? That's not me labeling you - I wouldn't. You labeled them, so in fairness, you'd have to include yourself (unless you're Andy Taylor behind the wheel).
Eye of the beholder, man. I sure wish I was worthy of walking you down this road - I fear I'm not smart enough to do my position justice, and for that, I'm sorry.