

“Selfish” would be a situation where sufficient community exists that cooperation is at all possible. I think most preppers will simply tell you that they are expecting and prepping for complete collapse. As in, like it or not, “every man for themselves” would come to them, not them seeking it out.
In other words, without arguing why a “every man for themselves” situation can’t or will never happen, the rest of your argument becomes irrelevant.
Now that question is fascinating. Haiti comes to mind as an example scenario. Are community-skills relevant in the face of roaming gangs and anarchy? I think that depends on how desperate these gangs are for immediate versus long term survival and planning. I’m also not sure Haiti is an exhaustive example of the types of societal collapse that are possible or likely.











They did answer your question. Same way in a “capitalist” society: those who take more responsibility or risk earn more benefit. More/better food, more rank, more commission, more salary, better housing, better medical care, etc.
There are plenty of examples of this happening and also not happening under both capitalism and communism. Is there a trend? That’s a very long debate.