In the case of Bell Telephone Company of Pennsylvania v. Pennsylvania Public Utility Commission, 1939, the Supreme Court ruled in favor of the telephone company. The dispute arose when a state commission ordered Bell to provide free service for police and fire departments as part of its public duty. However, Bell argued that this was an unconstitutional taking without just compensation under the Fifth Amendment. The court agreed with Bell's argument and held that while states have broad powers to regulate utilities for public benefit, they cannot force them to provide free services without payment or due process. This ruling established a precedent protecting utility companies from being compelled by state commissions to offer uncompensated services.

In the dissenting opinion for Bell Telephone Company of Pennsylvania v. Pennsylvania Public Utility Commission, Justice Black argued that the majority's decision to strike down a state regulation requiring telephone companies to provide free directory assistance calls was an overreach of federal power. He contended that this ruling interfered with states' rights and their ability to regulate local services as they see fit. Furthermore, he disagreed with the majority's interpretation of "just and reasonable" rates under the Communications Act of 1934, arguing that it should not be interpreted so narrowly as to exclude additional services like directory assistance from being considered part of basic telephone service. In his view, such decisions about what constitutes fair and reasonable service should be left up to individual states rather than dictated by federal law or courts.