Government and Business
This domain covers regulation, antitrust, consumer and worker protection, and the fiscal tools government uses to shape business conditions.
Why government regulates
Markets can fail through monopoly power, externalities such as pollution, information asymmetry, and public goods. Economic regulation controls prices, entry, and service quality in natural monopolies such as utilities. Social regulation protects health, safety, and the environment - OSHA for workplaces, EPA for air and water, FDA for food and drugs, CPSC for consumer products, SEC for securities disclosure.
Antitrust
The Sherman Act (1890) bans contracts in restraint of trade under Section 1, which requires two or more parties such as price-fixing competitors, and bans monopolization or attempts to monopolize under Section 2, which can involve a single firm. The Clayton Act (1914) targets specific practices - price discrimination under Robinson-Patman, tying and exclusive dealing, and anticompetitive mergers, later strengthened by Celler-Kefauver. FTC Act Section 5 prohibits unfair or deceptive acts or practices. Remedies include fines, consent decrees, divestiture, and treble damages in private suits.
Government as buyer, banker, and referee
Government purchases through competitive bidding and set-asides, subsidizes favored industries, guarantees small-business loans through the SBA, and may take private property for public use through eminent domain with just compensation. Deregulation of airlines, trucking, and telecommunications removed price and entry controls where competition was judged workable.
Fiscal role
Taxes fund services and alter behavior through credits and excise taxes. Spending and tax policy also stabilize the economy. Persistent deficits compete with private borrowers for capital, pushing interest rates up.
Worked example
Three airlines meet and agree to keep fares above $300 on a route. That is a per se violation of Sherman Section 1 - horizontal price fixing - even if no fare was ever charged at the agreed level. If instead one airline holding 90% share priced below cost to destroy a rival, the analysis shifts to Section 2 monopolization and requires proof of willful acquisition or maintenance of monopoly power.
Traps
Citing Sherman Section 2 for a two-firm agreement; attributing securities regulation to the FTC; confusing eminent domain with regulation; and assuming all regulation is economic rather than social.