As a matter of interest. What do any of you know that just keeps growing..unchecked, without getting unstable and collapsing? Why do rabid capitalists think that never ending economic growth is possible? Because they are short lived biological organisms who want power and money for themselves right now! That is the mental idea, trusting super rich to be honest and responsible!!
One thing is that there is always more people. With a steady population the end result of capitalism is a monopoly on everything. Wall-Mart is pretty much a poster child for capitalism. Whether or not its a good thing, I don't know.