(with price and quantity competition) and optimal regulation that involves an informational externality to the competitors … ; Competition ; Asymmetric Information ; Conglomerate Firms ; Multiutility ; Scope Economies ; Informational Externality …

ignorance if telephone numbers no longer identify networks. As a result, while fostering competition for mobile customers, MNP … carrier identification affect these findings. -- number portability ; switching costs ; telecommunications ; network … competition …