Earlier quoted context omitted.
> the most dominant hen, that pecked its way to the top of the pecking order at the expense of other hens. Individual selection doesn't necessarily work to the benefit of the group but wait... our entire economical system is based on this.
How so? Naively, it seems like capitalism is a means of “top group” selection, so long as there is relatively high chance for social mobility and opportunity. The method which worked better for chickens still involved selecting the best cohort (capitalism), and this improved over open breeding (socialism) or winner-take-all (monarchy).
Most of the time people who get stuff are the ones who have been attributed the most output individually.