The Dystopian Symbiosis : Passive Investing and Platform Capitalism

AllianceBernstein

Inigo Fraser Jenkins

Research

13 Pages

AllianceBernstein explores the uneasy relationship between dominant technology platforms and the rise of passive, cap weighted investing. The dialogue style essay argues that index flows and platform scale can reinforce each other in ways that weaken competition and price discovery. It also notes that effective corporate tax rates have fallen from above 40% in the 1960s to below 20% recently, raising questions about who bears system risk.

Date published: December 2025

Key Takeaways

Symbiosis concept: Describes how mega cap platforms and passive capital can feed each other and entrench market concentration.
Policy and power: Connects weaker antitrust enforcement and generous fiscal support to rising corporate margins and influence.
Risk distribution: Highlights that higher leverage and buybacks may shift risk from corporations toward households and governments.
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