Antitrust law was written to stop companies from getting so big they could dictate terms to everyone else. Starting in the late 1970s, courts and regulators narrowed it to one main question: will this merger raise prices for consumers? If the answer was no, most deals went through.
Critics say that test misses a lot: a company that dominates a market can hold down wages, squeeze its suppliers, or buy up small rivals before they become a threat, all without raising prices. Over the past several years, regulators in both parties have taken a harder look at big tech platforms, hospital mergers, and grocery deals, and the government’s 2023 merger guidelines widened what reviewers consider. How far enforcement should go remains a live argument, and it shifts with each administration.
Where people land
The case for it: More competition means better wages, more choice, and more innovation. Concentrated markets also give a handful of companies outsized political influence.
The case against it: Big companies often deliver low prices and products people love, and scale can mean efficiency. Aggressive enforcement risks blocking beneficial deals and handing judgment calls to regulators.
One approach is to go further: give enforcers more money and authority, and make merging companies prove a deal won’t harm competition, rather than making the government prove it will.
What you can do
Pay attention to mergers that affect you directly: your hospital system, your grocery chains, your internet provider. State attorneys general can review mergers too, and they respond to public comment. When a big deal is announced, the reviewing agency often invites comments from the public.