Hierarchies are promoted because they concentrate wealth and power among a few people, who distribute it to a few people they more-or-less trust. It's just feudalism with less violent feuding.
That's a pointless observation though, the interesting point is that hierarchies manage to concentrate benefits because working as part of a functioning hierarchy makes even the individuals involved a lot more effective, to the point where they're better off even with much of the benefit flowing towards the top.
That's a pointless observation though, the interesting point is that hierarchies manage to concentrate benefits because working as part of a functioning hierarchy makes even the individuals involved a lot more effective, to the point where they're better off even with much of the benefit flowing towards the top.