The main thesis of Wealth delle nazioni of Adam Smith is that the job, and therefore the capital that increases productivity, It is used in the best conditions in the non-public interference and free trade. Smith, to explain this concept, he gave life the famous metaphor of invisible hand: each individual, in pursuing their own interests, It is pushed, as from a invisible hand, to work for fine of the whole community. The Invisible Hand is a sort of Providence (somehow immanent), thanks to which the free market search selfish interest to the interest of their basically would benefit the entire society and seeks to transform those constituting “private vices” in “public virtue”. practically, the invisible hand is the competition that comes from a multiplicity of individual sellers selfish. It serves to lower prices, to conserve resources and to ensure that producers meet the wishes consumer. Any interference in the free competition by the government is therefore almost certainly harmful.
Maybe this can be true in a universe ideal, which does not require the use of tricks and escamotage. For example, if an entrepreneur opens a factory in a poor country to have the cheap labor, this can benefit the employer and its customers, but not to the population of the country where the product is realized. Indeed, in the poor country, harsh pay conditions will be maintained and therefore the workers remain poor.
In essence we are always in the presence of a zero-sum game, so if someone makes money, someone else has to lose. In such a system it will never reach a situation where “private vices” They are transformed into “public virtue”. The vice of greed constantly get richer and impoverishes the greedy increasingly needy.