intellect implication applied to economic hostile forces imply they either do not view their activities as financial nukes or they believe they will survive unscathed and not need a bunker. ;-) Based on UN forces on the ground in USA, non-military departments building up military powers, and other activities, the latter is the probable case.
Welp. One thing is most people built fallout shelters (build bugout bunkers) for their families; so, maybe that's not directly "personal safety". At any rate, there is also a general belief among preppers that they are a set of people, a group inspired to be prepared; this generally also defines those who do not prep as not prepared. So, you are talking about society but the preppers see two societies. The preppers have websites, books, tv shows, and more. Just as an Army prepares in units, those who built a fall-out shelter were not preparing in isolation. They did not expect they would be the only persons to survive. One can surely argue the inability of hostile forces to build and deploy a nuke is significant: seems some relationship exists between the intellect needed to make these things and the intellect needed to refuse to make or deploy these.
UN says 1.4B people don't use electricity. What happens in "modern" world doesn't affect them much. Reproduction rate for many animals is faster than cancer rate in Chyernoble from what I remember; so, even nukes might not really destroy those folks. Plus, many are outside the realms of major effect. So, clearly, North Americans who do not prep will be in trouble (just as non-NAZI's in Germany); but, aboriginees probably don't need to prep. I'd say a prepper in USA has a 75% chance of survival whereas a non-prepper a 0.5%. (Given my expectation that on-the-ground war is most probable outcome in next 0.1 to 10 years). For other scenarios such as a comet, overly strong solar flare, massive pandemic, or such, preppers have maybe a 95% chance and non-preppers have maybe a 20% chance. The probability of those happening is probably 1% in our lifespan but could be as high as 20% for specific locations.