ess Unbundled Access 6. Regulatory Arbitrage Contents Constitutional Arguments in Favor of Market-Based Pricing 1. Physical Collocation 2. Virtual Collocation 3. Wireless Interconnection 9. Antitrust as Applied to Network Industries A. The Origins of the Essential Facilities Doctrine B. A Critique of the Essential Facilities Doctrine 1. The Economics of Vertical Exclusion 2. The Allocation of Authority between Antitrust Courts and Regulatory Agencies The Impact of Trinko 1. The Economics of Vertical Exclusion 2. The Allocation of Authority between Antitrust Courts and Regulatory Agencies Trinko's Implications 4. The Impact of Trinko's Varying Interpretations The Different Types of Access under Antitrust Law 1. Retail Access 2. Wholesale Access Interconnection Access 4. Platform Access Unbundled Access The Regulation of Last-Mile Broadband Networks A. The History of Last-Mile Broadband Regulation 1. Regulation of Cable Modem Systems 2. Regulation of Digital Subscriber Lines The Debate over Network Neutrality The Rationales for Regulating Last-Mile Broadband Networks 1. Natural Monopoly 2. Network Economic Effects 3. Vertical Exclusion 4. Managed Competition The Different Types of Access to Broadband Networks 1. Retail Access Wholesale Access Interconnection Access 4. Platform Access Unbundled Access D. Arguments in Favor of Market-Based Pricing Contents 11. The Regulation of Broadband Networks and the Internet: Network Neutrality versus Network Diversity A. The Economic Case for Network Diversity 1. Vertical Exclusion and Network Neutrality 2. Network Diversity and Static Efficiency 3. Network Diversity and Dynamic Efficiency B. Noneconomic Justifications for Network Diversity C. Institutional Considerations 12. The Regulation of Broadband Networks and the Internet: Network Neutrality versus Network Capacity Sources of Congestion on the Internet B. The Economics of Congestion 1. Congestion and the Choice between Flat-Rate and Usage-Sensitive Pricing 2. The Impact of Transaction Costs on the Choice between Flat-Rat