Instead, it will be the people who manage to build new societies from the rubble. I'd imagine that creative engineers who can ensure clean water supply and working electricity (or other smaller services) would be more valuable. Indeed, we can look back at history and think of the Rice Kingdoms of Japan / Korea / Vietnam. Yes, there was a sizable security force (Samurai), but it was rice / food that determined power.
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The kinds of "prepping" that these preppers are aiming for is this kind of weird... Mad-Max and/or Walking Dead scenario that has more basis in fiction than history and/or reality.
I'm not necessarily saying "guns aren't important'. But even ancient Sparta was unable to wage warfare without support of food-and-water. There's a reason why Athens / Athena is the goddess of wisdom + war, because war requires supplies and supplies requires logistics, and logistics (back then) required a Navy.