This paper addresses the question of the supply of Intellectual Capital (IC). The paper's main hypothesis is that the analysis of Intellectual Capital is usually made based in the overall level of IC that exists in a country. That way of analysing IC, crucially hides the importance of the Social Policies and of the Welfare States as providers of IC and enablers of investments that use IC intensively. Consequently this paper tries to shed light in the fact that, for a country to have a high level of IC, a very important set of public policies must be put in place. Therefore its main conclusion is that, even in an epoch in which Social Policies and Welfare States are said to be at risk, those Social Policies and those Welfare States are the foundation of Intellectual Capital, and of the prosperity in the world.