Competition is not the only response to being one entity among many, and it is not even necessarily the most reasonable response. Cooperation is also possible, and it is one of the necessary elements in every human organization, from the family to global cultures. We have civilization because we are to some degree able to cooperate, and if you simply turn up the dial on that trait, it is easy to imagine that other creatures could exist who were even better cooperators - and who would be collectively even more successful because of it.