Here's the frame that matters. It's not "should everyone switch," it's whether a diverse ecosystem beats a monoculture. When everyone runs the same OS, one exploit pays off across millions of targets at once, a great payoff matrix for attackers. OpenBSD flips those incentives, and its defaults make the secure choice the lazy choice, so a user doesn't need to out-think an adversary. Mainstream convenience is real, but it's a coordination trap. Niche OSes being worth using isn't about market share. It's about keeping the whole ecosystem's equilibria honest.