While there are several factors that might go into deciding where to place your business, clusters of similar companies can be explained by a very simple story called Hotelling's Model of Spatial Competition.
Embora existam inúmeros fatores que influenciam a decisão  de onde abrir um negócio, podemos explicar a aglomeração empresarial através de uma simples história, chamada Modelo de Concorrência Espacial de Hotelling.