Antitrust Law Is Blocking Corporate Responses to Shared Economic Risk
Antitrust law has moved from a narrow competition doctrine to a broader fault line in debates over climate change, inequality, and pandemic resilience. In this 2021 policy article, Miazad argues that the largest asset managers and their portfolio companies now face a world in which firm-level decisions spill far beyond a single balance sheet. Their investors are increasingly universal owners: institutions whose portfolios are so large and diversified that they effectively own slices of the entire economy. When one company externalizes harm, the damage does not stop there; it returns through the rest of the portfolio.
That financial structure changes the incentives inside corporate governance. Diversification protects these owners from company-specific shocks, but it leaves them exposed to systemwide harm from carbon emissions, labor instability, social fragmentation, and public health disruption. CEOs and directors who talk about “social purpose” often draw skepticism from shareholder-primacy advocates, yet the economic logic is direct. A diversified investor has less reason to celebrate one firm’s short-term gain if that gain depends on shifting costs onto other holdings through pollution, unsafe supply chains, or labor practices that weaken the broader economy.
The article’s core claim is blunt. Current antitrust doctrine has become a barrier to the kind of collaboration companies need in order to reduce shared externalities.
Universal Ownership Has Turned Externalities Into Portfolio Risk
The article places unusual emphasis on the role of large asset managers in the modern economy. Index investing has concentrated ownership and made the biggest investors stakeholders in nearly every major sector. Those institutions cannot escape systemic shocks by selling one stock and buying another, because the risk is embedded across the portfolio. Climate change is one example, but the article frames the issue more broadly: income inequality and the COVID-19 pandemic have also revealed how quickly local decisions become economy-wide threats.
In that setting, boardrooms are no longer dealing only with the classic problem of maximizing one firm’s profits against competitors. They are also managing exposure to harms that arise when businesses pursue narrow gains without accounting for their wider social cost. The article argues that this reality makes the old antitrust instinct, which treats collaboration with deep suspicion, increasingly misaligned with the needs of modern capital markets. If companies cannot work together on shared problems, they may remain locked into practices that are efficient only from a single-firm perspective.
A diversified shareholder may prefer a company to absorb some cost today if that reduces larger losses across the portfolio tomorrow.
Collaboration Can Reduce Harm Without Abandoning Competition
The policy argument does not call for replacing competition law with open-ended cooperation. Instead, it asks whether antitrust rules can distinguish between coordination that suppresses rivalry and coordination that helps firms address negative externalities. The article contends that many companies are already attempting to make stronger environmental and social commitments, but the legal environment discourages the cross-firm cooperation needed to make those commitments credible and durable.
This is where the paper’s concept of the prosocial corporation enters. Firms that aim to reduce harm do not operate in a vacuum. They often need industry-wide standards, shared protocols, or collective commitments to make progress on emissions, public health preparedness, or other systemic risks. When antitrust law blocks those efforts too aggressively, it can preserve formal competition while leaving broader social damage untouched. The result is a regulatory mismatch: the law protects rivalry, but not necessarily the conditions that make markets sustainable over time.
The pandemic sharpened that argument. COVID-19 exposed the interdependence of supply chains, labor markets, and public systems, making the costs of fragmented decision-making harder to ignore. Climate change deepens the point. As temperature shocks, displacement, and physical infrastructure losses intensify, companies cannot reasonably treat their externalities as someone else’s problem. Those effects feed back into consumer demand, workforce stability, insurance costs, and the value of institutional portfolios.
Antitrust Reform Would Need Clear Guardrails
The article does not present collaboration as automatically beneficial. Cooperation among competitors can be abused, and antitrust law still has a role in preventing collusion, price fixing, and exclusionary conduct. The challenge is to build a legal framework that permits cooperation aimed at reducing shared social harms while keeping traditional competition safeguards intact. The paper argues that current doctrine is too rigid to make that distinction reliably.
A more adaptive antitrust approach would recognize that some collective action produces public benefits without eliminating meaningful rivalry. Industry participants could coordinate on climate targets, disclosure norms, or other socially constructive practices, provided those agreements do not become cover for anti-competitive behavior. The article’s claim is not that every collaborative initiative should be exempt from scrutiny. It is that the existing legal posture places the burden too heavily on firms trying to address systemic threats that no single company can solve alone.
In practical terms, this means antitrust law would need to stop treating all collaboration as suspicious by default. It would need criteria capable of evaluating whether a collective practice reduces negative externalities, supports long-term market functioning, and preserves enough competitive pressure to protect consumers.
The Policy Stakes Extend Beyond Corporate Governance
Although the article is framed as a legal and economic analysis, its implications reach into public health and social stability. Climate stress, inequality, and pandemic vulnerability all shape population risk. When firms are prevented from coordinating on solutions to those problems, the cost is not confined to shareholders. Workers, consumers, communities, and public institutions absorb the downstream effects.
The article’s broader thesis is that antitrust policy should be judged not only by whether it restrains monopoly power, but also by whether it enables the corporate sector to respond to economy-wide threats. That argument is especially relevant in a market dominated by massive diversified investors. For them, the line between private gain and collective loss has become increasingly hard to draw.
A rigid antitrust regime can protect competition and still fail the economy it is meant to govern.
The article ends on a straightforward policy premise: if the modern economy is built around interdependence, then the law must allow more cooperation to address the risks that interdependence creates. The unresolved issue is how far antitrust doctrine can move toward that goal without giving competitors a legal shelter for coordinated market power. That tension, not any single corporate pledge, will determine whether prosocial collaboration becomes feasible at scale.