thinking about the effects of capitalism on the poor requires no little than a recollection of the robinson crusoe model. This model posits that at first, crusoe has nothing, except his labor, to use. This case is totally analogous to the situation where a man has nothing to supply except his physical manpower -no wealth, or special skill except his ability to apply force to a task. Yet we see that crusoe can easily become a wealthy man or can at least improve upon his previous impovershment, through work. So in a like manner, capitalism secures a laborer a just price -when labor is in high demand, the laborer is paid high wages. But the free market system is also flattering to the poor in their character as consumer. Robinson Crusoe has to acquire food (or what-have-you) and he gets it by applying scarce means. At first though, it will be significantly harder for him to acquire food, at least in comparison to his later efforts. Add a second person to Crusoe’s island and what this manifests as is a high price. So we see that free trade is good for those people who need to find work -this is seen in high wages, and free trade is good for those persons who are in the greatest need -and this is seen in high prices.
This is one point that I think that we as libertarians always forget in addressing objections to capitalism. It is good to show that unemployment is really ephemeral on the free market but there are indeed real and completely tangible benefits that free trade has for the poor, which no government could provide from out of its illusory promises, should be brought forward as one of the selling points of capitalism -agree or no?