1. Introduction; Part I. The Competitors in the Digital Network Industry; 2. A typology for digital goods, platforms, and ecosystems; 3. The Digital Network Industry: a confluence of the old and new; 4. Core platform services, the new natural monopoly?; Part II The Dynamics of Competition between Digital Ecosystems; 5. Modalities of ecosystem competition; 6. The stages of ecosystem competition - from efficient to harmful; 7.

Theories of harm for ecosystem competition; Part III. A Regulatory Framework to Govern Ecosystem Competition; 8. The existing regulatory paradigms: DMA, DMCC, and Sec. 19a GWB; 9. A New Regulatory Paradigm: Progressive Ecosystem Regulation; 10. Conclusions.