What is your source for your baboon anecdote? it is contrary to what I have read, eg, in Baboon Metaphysics. Or here:

Lower-ranking males form alliances and can harass newly immigrated but dominant males and protect adult females with which they have bonds. Overall, though, dominance rank of a male indicates reproductive success so that high-ranking males have more mating opportunities, more offspring, and increased fitness compared to lower-ranking males