I don't think it's correct to assume a pure strategy (ie each male is either dominant OR submissive). It might make more sense for males to be able to switch when the opportunity arises from submissive to dominant (a mixed strategy in game theory terms). I think outsider orang-utans can become alphas (adding the distinctive cheek-flaps etc) when they find a group that will let them join, for example.

We do see humans making the same transition (and in the other direction too) when they move between groups, and when opportunities arise.