During most of the twentieth century, highways, tunnels and bridges were viewed as public goods that had to be provided by the government.By the end of the century, however, chronic budgetary problems had led governments to allow participation of private firms in financing, building,and operating infrastructure projects. For example, worldwide private invest-ment in transport infrastructure
En este artículo se proporciona una breve síntesis histórica de este tema para conectar la discusión presente con la del pasado. En la primera parte hay una revisión compacta del debatehistórico. Esto incluye la interrogante permanente sobre la importancia del cobre para Chile; esto se complementa con las estadísticas pertinentes sobre el rol del cobre