Incentivos de Mercado para Formação de Clusters: uma Abordagem Unificada.

This paper relies in a simple micro-model which is able to capture the impact of all major factors forwarded in the literature to explain the generation of market incentives clustering. The model helps to understand the role of each of these factors, unveiling those that play any role either as necessary and/or sufficient conditions to provide market incentives for clustering. The factors analysed are: (i) existence of externalities, (ii) increasing returns to scale and (iii) spatial concentration of demand. It is argued that all the other market incentives appearing in the literature can be classified as one of these three factors. Existence of externality is seen as the only necessary and sufficient condition to generate market incentives for clustering. The two others demand the existence of externality to be able to generate market incentives of clustering.