I think that pepper mostly exists in movies.
Certainly some people probably emulate the Hollywood version, but I think that’s about it.
Most “peppers” are fathers that have had the good sense to pause and think “so, what would I be able to do to serve my family if something disastrous happened? What might that look like?”
Usually, a disaster go-bag of some kind with enough basic supplies to weather a day or two of displacement suspension of normal services. Sometimes, if they live in a place where it’s reasonable to imagine staying put is a good option, they might also have a generator and fuel, a week or two worth of long shelf life food, and some water storage. That ensures the wellbeing of their family will not be contingent on outside help, at least during most common disasters. Many of these people may also have a gun or two, for defense or for hunting if they are rural.
Some people go beyond that, and sometimes with a military focus, other times with months of rations, a bunker, or other unusual preparations. Mostly, those are not based on realistic scenarios. In almost any protracted disruption, having a lot of supplies , armaments, or resources will be as much a liability as an asset. People that buy guns -for prepping- are just living out some kind of hero fantasy. If you own guns, and use guns as part of your normal life, it would make sense to have a solid reserve of ammunition. If guns are your disaster scenario, you’re going to have a bad day.
As an individual or nuclear family, to weather an extended problem, you’d need to have a literal secret underground lair that was either so hard to get to or so well hidden that no one would know, and you’d have to be completely self contained. That’s simply not practical for all but actual billionaires, but people cosplay this to varying degrees. Even billionaires might find ymmv.
A much more practical and wholesome approach is to be part of a community that includes farming, independent sources of power and water, and generally sustainable independence from less robust centralized systems. This provides for basic necessities as well as a common defense. Humans lived in tribes for a reason, and 30 people with well aligned incentives and sustainable infrastructure for food, water, and energy is probably the absolute minimum viable structure for security during a disruption of more than a couple of months. Otherwise you would be dependant on total stealth or extreme isolation. Some neighbourhoods would probably coalesce into something resembling this, but organisation ad-hoc under pressure would probably end up with tensions if not violence.
Projects like this one can be real resources for well organized communities. I’ll probably look at running this on our servers as an additional resource, along with our library.