How can we punish earth that created earthquakes and kills millions directly and indirectly? Or asteroids for hitting earth?Otherwise, we need other ways to make an agent behave in good manners.The characteristic of many animals, especially humans, is their realisation that you can usually achieve more by collaboration than by competition. Thus we appreciate a sort of long-term integrated reward and most of us value that above immediate selfgratification. We use punishment and reward to bring into line those who don't.
There are some balance between collaboration and competition. It's due to economic law of diminishing marginal utility. When there are more available resource or opportunity, collaboration is preferred. But when there are too many conscious agents or the resource are scarce, competition would be preferred.
Technological advancement can increase the amount of available resources. But as long as they are finite, we must keep reproduction rate under control. Otherwise there would be too much redundancy, which would be a suboptimal situation.