Antitrust Law, Monopoly Power and Big Tech Cases

What Antitrust Means in Simple Terms

Antitrust (also written anti-trust or anti trust) is the set of laws that keep markets competitive, so a few large firms cannot control what you pay, what you earn, or what suppliers get paid. When competition works, a company that overcharges loses customers to a rival. When a few firms dominate, that pressure disappears.

The word comes from the 1800s. Monopolies back then were organized as legal “trusts,” and the laws were written to bust them, starting with the Sherman Act in 1890. This page follows the power: a handful of firms now control beef, eyeglasses, airlines, hospitals, and search, and that control reaches your receipt and your paycheck.

The Three Laws That Govern Competition

Three federal laws do the work. They are short, old, and broad, and courts and two agencies, the Federal Trade Commission and the Justice Department, decide what they mean in practice.

The Sherman Act got its first big test in 1911, when the Supreme Court found the Standard Oil Trust had illegally cornered the oil market and ordered it broken into 34 companies. Congress passed the Clayton Act and the FTC Act three years later because the Sherman Act caught monopolies only after they had formed. The Clayton Act let regulators stop a dangerous merger before the damage was done.

A Few Firms Control the Things You Buy Every Week

Market concentration is when a small number of firms hold most of an industry. Meatpacking shows it most clearly, because the Agriculture Department has measured the same thing since 1980: the share of slaughter handled by the four largest companies.

Since 1980, the four biggest meatpackers’ share of beef slaughter more than doubled, and their share of pork nearly doubled.

For ranchers, that concentration means few buyers. Tyson, Cargill, JBS, and National Beef handle most of the country’s cattle, and in much of the country a rancher has only two or three places to sell a herd. Farmers and ranchers received 5.8 cents of every food dollar in 2024, by the American Farm Bureau’s count.

Other markets follow the same pattern with different measures. When a federal judge ruled Google a monopolist in 2024, the court found it held 89.2% of general search, and 94.9% on phones (NPR). In airlines, four carriers flew about 85% of domestic passengers in 2013, according to the Government Accountability Office.

The eyewear case shows how invisible concentration gets. EssilorLuxottica makes the frames, owns the brands, runs the stores, and sells vision insurance through EyeMed. Buy Ray-Ban or Oakley sunglasses, get an eye exam at LensCrafters or Pearle Vision, or shop at Sunglass Hut, and the money lands at the same company. A merger announced in 2017 at about $49 billion built that chain.

How Concentration Shows Up on Your Receipt

When competition fades, firms can charge more without losing customers. Economists measure this as the markup, the gap between what a product costs to make and what it sells for, and that gap widened for 36 years straight in the data.

The average markup nearly tripled from 1980 to 2016, and the increase came almost entirely from the largest firms.

The markup study found the median firm barely changed. The rise came at the top, among the dominant firms in each industry, which is what market power looks like in the data: a company with no close rival can hold its price above cost and keep the difference.

The same squeeze runs backward to suppliers. When four packers are the only buyers for a region’s cattle, the rancher takes the price offered, so the buyer sets the terms on both ends, low to the supplier and high to you.

How Concentration Holds Down Your Pay

Antitrust is not only about prices. The same firms that sell to you also hire you, and when a few employers dominate the jobs in an area, they gain power over wages the same way they gain power over prices.

Economists call this monopsony, too few buyers of labor. A 2024 review of the research in the Annual Review of Economics estimates that pay would be 15% to 50% higher if employers did not hold that power.

Noncompete clauses make employer power stronger. They bar a worker from taking a job at a rival, which removes the threat of leaving that keeps wages honest. The FTC banned most noncompetes in 2024, a federal court struck the rule down that August, and the agency dropped its appeal in September 2025 (FTC). The clauses remain legal in most states.

Why Enforcement Went Quiet for 40 Years

Antitrust enforcement swings between two ideas about what the law is for. It began with the 1890 Sherman Act and the 1911 Standard Oil breakup. A 1978 book turned courts toward a price-only test, even as the AT&T breakup that closed out the old era took effect in 1984. Mergers then flowed through the 2010s, until a 2021 revival led to the 2024 Google ruling and a 2026 leadership shakeup.

1890: Congress passed the Sherman Act, banning monopolies and price-fixing.

1911: The Supreme Court broke Standard Oil into 34 companies. In this era, bigness alone could draw a lawsuit if a firm dominated a market.

1978: Robert Bork published The Antitrust Paradox, arguing that antitrust should ask only whether a deal raises prices for consumers. Courts adopted the test. If a merger did not obviously raise prices, it was allowed, and harm to workers, suppliers, or competition itself did not count.

1984: The AT&T breakup took effect on January 1, 1984, ending a case the Justice Department filed in 1974 (Federal Judicial Center). It was the old approach’s last great win, finished after courts had already begun to turn.

2010s: Under the price-only test, regulators cleared most mergers. This is the period when beef, eyewear, airlines, and hospitals consolidated into a few hands.

2021: FTC chair Lina Khan and DOJ antitrust chief Jonathan Kanter rejected the price-only standard as blind to wage and supplier harms. The agencies issued new merger guidelines in December 2023 and took on Big Tech directly.

2024: Judge Amit Mehta ruled that Google illegally maintained its search monopoly, partly by paying Apple billions to be the default search engine on iPhones.

2026: The Justice Department settled its Live Nation case in the middle of trial and settled its challenge to the HPE-Juniper merger. The division’s head, Gail Slater, resigned in February 2026. The 2023 merger guidelines stayed in force, which FTC chair Andrew Ferguson confirmed in 2025.

The Big Antitrust Cases Happening Now

The revival produced the largest antitrust cases in a generation, and several are still in court in 2026. The results are mixed, and they will shape what a few firms can do for years.

The two Google rulings are the landmarks, and neither ended in a breakup. In search, the court ordered Google to stop signing exclusive default-search contracts and to share some data with rivals, and both sides have appealed. In ad technology, Judge Leonie Brinkema ruled Google a monopolist in April 2025 and, on September 2, 2026, declined to force a sale of its ad exchange, ordering changes to how its tools work instead.

The Live Nation case shows what state attorneys general add. The Justice Department settled in March 2026 without a breakup. The states that had sued alongside it refused the deal, took the case to a jury, and won in April 2026, with the jury finding New Yorkers were overcharged $1.72 per ticket. A judge has not yet decided the remedy.

The blocked mergers matter as much as the wins in court. Kroger and Albertsons would have been the largest grocery merger in US history, and a federal judge stopped it in December 2024. A judge blocked JetBlue’s purchase of Spirit that January on the grounds that it would raise fares. The Meta loss in 2025 shows the limit: a judge ruled the FTC had not proven Meta holds a monopoly today.

What Stronger Competition Policy Looks Like

The tools to restore competition already exist. The question is whether agencies use them and whether Congress funds the effort, and reform runs along four lines.

• Merger review with teeth. The Clayton Act lets regulators block deals that would harm competition, and the 2023 merger guidelines made that review tougher. The Kroger-Albertsons and JetBlue-Spirit blocks show the tool works when agencies use it.
• Breakups in extreme cases. Standard Oil and AT&T were split when no lighter fix would restore competition. Both Google remedies stopped short of a breakup, so the live debate is how far a court should go.
• Banning noncompetes. Freeing workers to take a better job is one of the most direct ways to raise pay in concentrated job markets. With the FTC’s rule gone, the fight has moved to Congress, where the bipartisan Workforce Mobility Act (S. 2031) would ban most of them, and to the states.
• Funding the agencies. The FTC and the Justice Department’s Antitrust Division take on companies with far larger legal budgets, so staff and money decide which cases get brought at all.

Big Is Not Always Bad

Antitrust is a tool, not a verdict on size. The law asks whether a firm harmed competition, not whether it is large, and a fair view holds several things at once.

• Scale can lower prices. Costco and Amazon pass real savings to customers through volume. A company that earns its position by serving people better is not the problem.
• Some dominance comes from a better product. Google won search in part because it worked. The legal question is whether it then used that position to block rivals, which the court found it did.
• The consumer-welfare standard had a point. It gave courts a measurable test, prices, instead of a vague rule that bigness is bad. The critique is that prices miss harms to workers and suppliers, not that prices do not matter.
• Antitrust is not one party’s issue. The Google search case began under the first Trump administration in 2020 and was won under Biden. The current FTC kept the 2023 merger guidelines and several Big Tech suits.
• Airline competition may be recovering. A June 2026 GAO report found indicators of increased airline competition over the past two decades, a reminder that concentration can ease.
• Not every merger is bad. A merger can rescue a failing firm or fund a better product. The law judges the specific deal and its effect, not mergers in general.

Frequently Asked Questions

Is antitrust the same as monopoly?

No. A monopoly is a market one company dominates; antitrust is the law that governs how companies compete. Holding a monopoly is not illegal by itself. The FTC says gaining one through “superior products, innovation, or business acumen is legal,” while getting or keeping one through exclusionary or predatory conduct can break the Sherman Act.

What are the antitrust cases against Big Tech?

Courts have ruled Google an illegal monopolist twice, in search (2024) and in ad technology (2025), and neither ruling ended in a breakup. The FTC lost its case against Meta at trial in November 2025 and appealed. The FTC case against Amazon is set for trial in March 2027, and the Justice Department case against Apple is in discovery.

What are the big three antitrust laws?

The Sherman Act (1890), the Clayton Act (1914), and the FTC Act (1914). Sherman bans monopolies and price-fixing. Clayton blocks anticompetitive mergers before they form. The FTC Act bans unfair competition and created the Federal Trade Commission.

Why is it called "antitrust"?

In the 1800s, monopolies were organized as legal “trusts,” like the Standard Oil Trust. The laws were written to break the trusts, so they became known as antitrust laws.

What is an example of an antitrust violation?

Competitors secretly agreeing to fix prices is the clearest one. So is a dominant firm signing deals that lock rivals out of the market, which is what a court found Google did in search. Mergers that would leave a market in too few hands, like Kroger-Albertsons, can also violate the law.

Who enforces antitrust law?

Two federal agencies, the Federal Trade Commission and the Justice Department’s Antitrust Division. State attorneys general and private companies can also sue, and in the Live Nation case the states won at trial after the federal government settled.

Does antitrust law cover wages, not just prices?

It can. Suppressing wages through employer market power or no-poach agreements between companies can violate antitrust law. This was a focus of enforcers from 2021 to 2025 and remains contested in court.

What You Can Do

1. Tell your representatives to fund the FTC and DOJ Antitrust Division. These agencies fight companies with far larger legal budgets, and budget cuts are how enforcement dies quietly. Use the letter and call script below.

2. Ask your senators to cosponsor the Workforce Mobility Act (S. 2031). With the FTC’s noncompete rule gone, this bipartisan bill is the federal path to banning most noncompetes. If your job is covered by one, say so.

3. Ask your state attorney general what they are doing on competition. State AGs won the Live Nation trial after the federal case settled. Ask yours, by email or at a public event, which monopoly cases the office has joined.

4. Follow the concentration in your own life. Open Markets Institute tracks which firms control which industries, and the American Antitrust Institute covers the live cases.

5. Write your representative using the letter below and ask for a clear commitment to fund the antitrust agencies.