Natural Monopoly and Distorted Competition: Evidence from Unbundling Fiber-Optic Networks Staff Working Paper 2012-26 Naoaki Minamihashi Can regulation solve problems arising from a natural monopoly? This paper analyzes whether “unbundling,” referring to regulations that enforce sharing of natural monopolistic infrastructure, prevents entrants from building new infrastructure. Content Type(s): Staff research, Staff working papers Topic(s): Market structure and pricing, Productivity JEL Code(s): K, K2, K23, L, L4, L43, L9, L96