If you have noticed, they do a really good job of responding to disasters. In fact, one of the funniest aspects, is that the Yakuza (Japanese mobsters) often are the first ones on the scene, and seem to take pleasure at beating the government response.
I suspect that part of the reason is that organized crime tends to have an incredibly robust infrastructure, hardened against unpredictable stressors.
Personally, I have no intentions of living in the type of feudal/fascist society that most preppers seem to yearn for.
BTDT.
I (legitimately) would rather croak.