Whether the defendants possessed monopoly power in a properly defined relevant market under § 2 of the Sherman Act.
Holding
Yes. The relevant market was the national market for accredited central-station protective services, and the defendants' 87% share established monopoly power.
Reasoning
A § 2 monopolization offense requires both monopoly power in a relevant market and the willful acquisition or maintenance of that power, rather than growth resulting from a superior product, business acumen, or historic accident. Monopoly power means the power to control prices or exclude competition, and it may ordinarily be inferred from a predominant market share. The defendants' combined 87% share was more than sufficient if the District Court's market definition was sound.
The Court upheld the product-market definition. Although burglar alarms, fire alarms, sprinkler supervision, and other protective services are distinct in some respects, accredited central-station protection is a commercially realistic cluster of related services: protection of property through a continuously staffed central station receiving automatic signals. Firms seeking to compete effectively commonly offered nearly all of these services, provided them from a single office, and customers often used them together.
The Court also held that other forms of property protection did not have to be included in the market. Watchmen, local alarms, proprietary systems, and direct connections to municipal departments differed materially in reliability, responsiveness, continuity, utility, and cost. For many customers, those alternatives were not reasonably interchangeable with accredited central-station service, particularly because insurers often required accredited service or offered materially greater premium reductions for it.
Accredited service itself could be treated separately from unaccredited central-station service. Accreditation reflected demanding underwriter standards for facilities, equipment, staffing, backup power, and links to public authorities. The record showed that insurers and customers regarded accredited stations as offering a superior form of protection, so the distinction was economically meaningful rather than merely formal.
The geographic market could properly be national even though each station served a local radius. The defendants planned, acquired, allocated territories, and conducted their operations on a national basis; ADT used national pricing structures and dealt with multistate customers; and insurance inspection, certification, and rate-making had substantial national dimensions. The national market therefore reflected the commercial reality of how the defendants built and operated their business.