A responsabilidade invísivel

Ao assunto da responsabilidade social das empresas (hoje referido por Jorge Sampaio), a Economist dedicou a edição de 22 de Janeiro.
Nela podemos encontrar o gráfico abaixo, o qual será melhor compreendido se acompanhado das palavras de Adam Smith.

Every individual necessarily labours to render the annual revenue of the society as great as he can. He generally, indeed, neither intends to promote the public interest, nor knows how much he is promoting it. By preferring the support of domestic to that of foreign industry, he intends only his own security; and by directing that industry in such a manner as its produce may be of the greatest value, he intends only his own gain, and he is in this, as in many other cases, led by an invisible hand to promote an end which was no part of his intention. Nor is it always the worse for the society that it was no part of it. By pursuing his own interest he frequently promotes that of the society more effectually than when he really intends to promote it. I have never known much good done by those who affected to trade for the public good.