The problem is that we left hunter-gatherer ethos behind and embraced patriarchy - not the other way around. Our ancient ancesters were egalitarian, oriented towards the good of the entire group, and respected women, who had considerable power in the clan.
What you are describing about the strongest man mating with many women is what gorillas do - not humans. You've got it all wrong.
"Gorillas, though, like more distant cousins on steroids, have small penises (balls on the inside), and males that are twice as big as females. Because gorillas mate polygynously (multiple ladies for each dude), males must be imposing to win access to females (specifically, their vaginas). But for chimps and bonobos, “multimale-multifemale” maters, the battle is on the inside — large volumes of sperm fight to the egg, even leaving traps for competitors. Our genital similarities to chimps and bonobos thus reveal our promiscuous past.(5)"
