I agree - capitalism is the best system conceived so far, as evidenced by the general decline in the power and influence of countries that deploy more socialism in their societies. And the ones that do have a modicum of success, like Norway, are small and subsidized by other countries. On the other hand, given the way humans are, every system needs rules and constraints. The challenge is that no one is smart enough to devise rules regarding new technologies and their deployment in advance, so the rules and constraints that make capitalism benevolent enough to be sustainable will always trail the implications of new technologies. And most of our political leaders are technological dolts, so the appropriate rules take even longer to develop and deploy than the public expects.