The Convergent Ownership Structure of Regulated Industries: A Cross-Sectoral Analysis of Market Concentration and Common Ownership

This paper documents the convergent ownership structure across multiple regulated industries, revealing a previously underexamined pattern of market concentration. Through systematic analysis of ownership data across seven major sectors—pharmaceuticals, food processing (meat and grain), tobacco, alcohol, automotive, and agricultural inputs (seeds)—we identify a common structural feature: the dominance of three asset management firms (BlackRock, Vanguard, and State Street, collectively "Big Three") as the largest shareholders across ostensibly competing firms in each sector. We extend Eisenhower's "Military-Industrial Complex" framework to propose a generalized "Regulatory-Industrial Complex" model, demonstrating structural isomorphism across military, financial, health, and regulatory domains. Critically, we argue this concentration does not require conspiracy or coordination; rather, it emerges from incentive structures that naturally select for configurations that fragment accountability while concentrating benefits. This analysis has implications for antitrust policy, democratic governance, and the political economy of regulation.