We shape our environment with tools to enhance our survival. Very few would condemn aboriginal peoples for hunting animals so they can live. Predatory animals, such as one of the large cats, do not make moral choices. Their behavior is based on instincts and environment. Man, however is capable of moral choice.
Game theory does show that cooperation is better than non-cooperation.
However, this theory is based on the assumption that all parties will cooperate. Enter into the formula a non-cooperating entity and the players will lose something. It matters little if the entity is an evil non cooperating player or a predatory animal. Not necessarily so. The United States was founded by revolution, violent revolution.