That's a very debatable point, and I'm not sure what you're trying to say really. The closest analogs we have are the native groups of the Americas, Africa, and Australia, and nearly all of them pair and form alliances of extended families without more than the occasional competition.
Most primitive life is harsh enough that you don't need to compete too much over mates. People with injury or chronic illnesses get knocked out just from going about their daily existence.
Most primitive life is harsh enough that you don't need to compete too much over mates. People with injury or chronic illnesses get knocked out just from going about their daily existence.