Humans can adapt to anything that doesn't outright kill us. It's our sole talent and has put us at the top of the food chain. So, the question of predetermination can't really be looked at from a physiological standpoint.
Sociologically, we're pack animals, more on the pattern of wolves than lions - more or less independent within a strict hierarchy. If a heirarchy doesn't exist, one will appear as if by magic. No one makes it, it just happens, based on the combined conscious and subconcious urges of the group.
Psychologically, we're primarily concrete beings. Need something to point to, to touch, to smell in order to process it.
So, no. There will always be leaders. There will always be followers, and ranks within both groups.