I see the desire/need to achieve the "preservation of us" which is not necessarily "them versus us" unless we all want the same thing and there isn't enough to go around. Somehow the beasts of the savannah have worked out a system where they can all get a drink of water. It is humans that feel the need to 'own' the water rather than share it even though there is plenty of this metaphorical water to go around.
Competition is a wonderful thing because it is a driver for excellence and innovation, but the "versus" part is just greed. Why do I need more than you? Why does my tribe need to have more than yours? Its sad to think that we seem to so rarely achieve great things that don't come at the expense of someone else.