Community antenna television (CATV) went out of use when the U.S. Supreme Court decided in Fortnightly Corp. v. United Artists that retransmission of the content via CATV violated the copyright held by the owner of the content.

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The Court found the opposite in Fortnightly - the retransmissions did not amount to a performance that would violate the owner's copyright. CATV simply went out of use by the invention of new technology that made CATV obsolete and/or unnecessary.

Community Antenna Television (CATV) Went Out of Use When the U.S