Big Three (American television) in the context of "YouTube TV"

Fox Broadcasting Company, LLC (commonly known as Fox; stylized in all caps) is an American commercial broadcast television network serving as the flagship namesake property of Fox Corporation and operated through Fox Entertainment. Fox is based at Fox Corporation's corporate headquarters at 1211 Avenue of the Americas in Midtown Manhattan, New York City, and it hosts additional offices at the Fox Network Center in Los Angeles and at the Fox Media Center in Tempe, Arizona. The channel was launched by News Corporation on October 9, 1986 as a competitor to the Big Three television networks, which are the American Broadcasting Company (ABC), the Columbia Broadcasting System (CBS), and the National Broadcasting Company (NBC).

Fox has gone on to become the most successful attempt at a fourth television network; it was also the highest-rated free-to-air network in the 18–49 demographic from 2004 to 2012 and 2020 to 2021 and was the most-watched American television network in total viewership during the 2007–08 season. It is a member of the North American Broadcasters Association and the National Association of Broadcasters. Unlike other major commercial broadcast networks, Fox does not have a newscast of its own due to its lack of a news division, and instead relies on its own 24-hour news channels, Fox News, Fox Business Network, and Fox Weather to supply news programming for the network.

The American Broadcasting Company (ABC) is an American commercial broadcast television and radio network that serves as the flagship property of the Disney Entertainment division of the Walt Disney Company. ABC is headquartered on Riverside Drive in Burbank, California, directly across the street from Walt Disney Studios and adjacent to the Team Disney – Roy E. Disney Animation Building. The network maintains secondary offices at 7 Hudson Square in New York City's Lower Manhattan neighborhood, which houses its broadcast center and the headquarters of its news division, ABC News. Until early 2025, the network's East Coast operations were based at 77 West 66th Street on the Upper West Side of Manhattan. Since 2007, when ABC Radio (also known as Cumulus Media Networks) was sold to Citadel Broadcasting, ABC has reduced its broadcasting operations almost exclusively to television. The youngest of the "Big Three" American television networks, the network is sometimes referred to as the Alphabet Network, as its initialism also represents the first three letters of the English alphabet in order.

ABC launched as a radio network in 1943, as the successor to the NBC Blue Network, which had been purchased by Edward J. Noble. It extended its operations to television in 1948, following in the footsteps of established broadcast networks CBS and NBC, as well as the lesser-known DuMont. In the mid-1950s, ABC merged with United Paramount Theatres (UPT), a chain of movie theaters that formerly operated as a subsidiary of Paramount Pictures. Leonard Goldenson, who had been the head of UPT, made the then-new television network profitable by helping to develop and green-light many successful television series. In the 1980s, after purchasing an 80 percent interest in cable sports channel ESPN, the network's corporate parent, American Broadcasting Companies, Inc., merged with Capital Cities Communications, owner of several television and radio stations and print publications, to form Capital Cities/ABC Inc., which in turn merged into Disney in 1996.

CBS Broadcasting Inc., commonly shortened to CBS (an abbreviation of its original name, the Columbia Broadcasting System), is an American commercial broadcast television and radio network and the flagship property of the CBS Entertainment Group division of Paramount Skydance. It is one of Paramount Skydance's three flagship subsidiaries, along with partial namesake Paramount Pictures and MTV.

Founded in 1927, headquartered at the CBS Building in New York City and being part of the "Big Three" television networks, CBS has major production facilities and operations at the CBS Broadcast Center and One Astor Plaza (both also in that city) and Television City and the CBS Studio Center in Los Angeles. It is sometimes referred to as the Eye Network, after the company's trademark symbol of an eye (which has been in use since October 20, 1951), and also the Tiffany Network, which alludes to the perceived high quality of its programming during the tenure of William S. Paley (and can also refer to some of CBS's first demonstrations of color television, which were held in the former Tiffany and Company Building in New York City in 1950).

An independent station is a broadcast station, usually a television station, not affiliated with a larger broadcast network. As such, it only broadcasts syndicated programs it has purchased; brokered programming, for which a third party pays the station for airtime; and local programs that it produces itself.

In North American and Japanese television, independent stations with general entertainment formats emerged as a distinct class of station because their lack of network affiliation led to unique strategies in program content, scheduling, and promotion, as well as different economics compared to major network affiliates. The Big Three networks in the United States — ABC, CBS, and NBC — traditionally provided a substantial number of program hours per day to their affiliates, whereas later network startups—Fox, UPN, and The WB (the latter two were succeeded by The CW and, to a lesser extent, MyNetworkTV)—provided substantially fewer shows to their affiliates. Through the early 1990s, Fox affiliates were often considered de facto independents.

According to Amanda D. Lotz, the multi-channel transition began in the mid-1980s and ended in the late 1990s. During this era, multichannel television became popular in the United States, leading to the breakdown of the network era which had been dominated by the Big Three broadcast networks (NBC, ABC, and CBS). Many changes happened during this transition, such as the invention of the remote control, the video cassette player, and analog cable systems expanding viewers' choice and control. This era gave viewers more choice and control over what and when they wanted to view a program. Viewers were able to defy the networks' schedules, because they could record the program and watch it whenever they wanted, using the VCR and later the DVR. Producers adjusted to the government regulations and networks were forced to give up some of the control they had over program creation. Subscription channels emerged with no advertisements and the method for measuring audiences became more precise with the Nielsen people meter, with broadcasters fundamentally changing their approaches to programming to accommodate the new device. The multi-channel transition was followed by the post-network era and Second Golden Age of Television.