Using deontologists or consequentialists approaches, how can a person evaluate how well free market systems versus government intervention in markets address poverty and income inequality? Also, what's a good explanation of how people in a free market economy, acting in their own self-interest, can better those around them?

For example: Deontologists judge actions as good or ethical by whether they conform to a set of principles, like the Ten Commandments or the Golden Rule. Consequentialists, on the other hand, judge actions by their consequences. If the consequences of an action are good, then the action is deemed to be good or moral.