Methods of promotion

The big six are the big companies which own multiple media businesses. These businesses can include broadcast and cable television, film, radio, newspaper, magazine, book publishing, music, video games, and various online entities. Much of the debate over concentration of media ownership in the United States has for many years focused specifically on the ownership of broadcast stations, cable stations, newspapers and websites.

Comcast Corporation, formerly registered as Comcast Holdings, is an American global mass media conglomerate and is the largest broadcasting and cable television company in the world by revenue. It is the second-largest pay-TV company. Comcast services U.S. residential and commercial customers in 40 states and the District of Columbia. The company's headquarters are located in Philadelphia, Pennsylvania. As the owner of the international media company NBC-universal. since 2011, Comcast is a producer of feature films and television programs intended for theatrical exhibition and over-the-air and cable television broadcast.

Comcast operates over-the-air national broadcast network channels (NBC and Telemundo), multiple cable-only channels (including MSNBC, CNBC, USA Network,NBCSN, E!, The Weather Channel, among others), the film production studio Universal Pictures, and Universal Parks & Resorts in Los Angeles and Orlando.  In February 2014 the company agreed to merge with Time Warner Cable in an equity swap deal worth $45.2 billion. Under the terms of the agreement Comcast was to acquire 100% of Time Warner Cable. However, on April 24, 2015, Comcast terminated the agreement.

Comcast has been criticized for multiple reasons. The company's customer satisfaction often ranks among the lowest in the cable industry. Comcast has violated net neutrality (the principle that Internet service providers should enable access to all content and applications regardless of the source, and without favouring or blocking particular products or websites) practices in the past; and, despite Comcast's commitment to a narrow definition of net neutrality. Its revenue is $74.51 billion (NBCUniversal: $28.46 billion).

The Walt Disney Company, commonly known as Disney, is an American diversified; multinational mass media and entertainment conglomerate headquartered at the Walt Disney Studios in Burbank, California. It is the world's second largest media conglomerate in terms of revenue, after Comcast.Disney was founded on October 16, 1923, by brothers Walt Disney and Roy O. Disney as the Disney Brothers Cartoon Studio, and established itself as a leader in the American animation industry before diversifying into live-action film production, television, and theme parks. The company also operated under the names The Walt Disney Studio, then Walt Disney Productions. Taking on its current name in 1986, it expanded its existing operations and also started divisions focused upon theater, radio, music, publishing, and online media.

In addition, Disney has since created corporate divisions in order to market more mature content than is typically associated with its flagship family-oriented brands. The company is best known for the products of its film studio, Walt Disney Studios, which is today one of the largest and best-known studios in American cinema. Disney's other three main divisions are Walt Disney Parks and Resorts, Disney Media Networks, and Disney Consumer Products and Interactive Media.Disney also owns and operates the ABC broadcast television network; cable television networks such as Disney Channel, ESPN, A+E Networks, and Freeform; publishing, merchandising, music, and theatre divisions; and owns and licenses 14 theme parks around the world. The company has been a component of the Dow Jones Industrial Average since May 6, 1991. Mickey Mouse, an early and well-known cartoon creation of the company, is a primary symbol and mascot for Disney. Its revenue is $52.46 billion. 

Twenty-First Century Fox (stylized as 21st Century Fox and simply known as Fox) is an American multinational mass media corporation. It was one of two companies formed from the 2013 spin-off of the publishing assets of News Corporation, as founded by Rupert Murdoch in 1979; 21st Century Fox is the legal successor to News Corporation, and primarily deals in the film and television industries. The other company, the "new" News Corporation, holds Murdoch's print interests (both owned by him and his family via a family trust).

Its assets include the Fox Entertainment Group—owners of the 20th Century Fox film studio and Fox television network among other assets, pan-Asian pay channel operator STAR TV, and a stake in European pay TV company Sky plc. The companies revenue is $28.98 billion.

Time Warner Inc. (TWI, at one former interval named AOL Time Warner, stylized as TimeWarner since 2003) is an American multinational media and entertainment conglomerate headquartered in the Time Warner Center in New York City. Time Warner was formed in 1990 through the merger of Time Inc. and Warner Communications. The current company consists largely of the assets of the former Warner Communications, as well as HBO (a Time Inc. subsidiary prior to the Warner merger) and the assets of Turner Broadcasting (acquired in 1996). Time Warner currently has major operations in film and television, with a limited amount of publishing operations. Among its assets are Home Box Office, Turner Broadcasting System, The CW Television Network, Warner Bros., CNN, DC Comics, and as of August 2016, it owns 10% of Hulu.

In the past, other major divisions of Time Warner included Time Inc., AOL, Time Warner Cable, Warner Books, and Warner Music Group. All of these operations were either sold to other investors or spun off as independent companies between 2004 and 2014. Its current revenue is $28.11 billion.

CBS Corporation is an American mass media corporation focused on commercial broadcasting, publishing, and television production, with most of its operations in the United States. The president, chief executive and executive chairman of the company is Leslie Moonves. Sumner Redstone, owner of National Amusements, is CBS's majority shareholder and serves as chairman emeritus. The company began trading on the NYSE on January 3, 2006. Until then, the corporation was known as Viacom, and is the legal successor to said company. A new company, keeping the Viacom name, was spun off from CBS. CBS, not Viacom, retains control of over-the-air television (CBS, CW) and radio broadcasting, TV production and distribution, publishing, pay-cable, basic cable (Pop), and recording formerly owned by the larger company. CBS has its headquarters in CBS Building, Midtown, Manhattan, New York City, United States. Its revenue is $13.88 billion.

Viacom, Inc. (known simply as Viacom) is an American media conglomerate with interests primarily in cinema and cable television. Voting control of Viacom is held by National Amusements, Inc., a privately owned theater company controlled by the billionaire Sumner Redstone. Redstone also holds via National Amusements a controlling stake in CBS Corporation.

The current incarnation of Viacom was created on December 31, 2005 as a spin-off from the original incarnation of Viacom, which was renamed as CBS Corporation after the spin-off. CBS Corporation currently retains control of the over-the-air broadcasting, TV production, subscription pay television (with Showtime Networks) and publishing assets (with Simon & Schuster), which were previously owned by the original Viacom. Predecessor firms of the original Viacom included Gulf+Western (which later became Paramount Communications) and Westinghouse Electric Corporation. Comprising BET Networks, Viacom Media Networks and Paramount Pictures, the current Viacom operates approximately 170 networks, reaching approximately 700 million subscribers in approximately 160 countries. Its revenue is $13.27 billion.

This infomation was found on Wikipedia.
https://en.wikipedia.org/wiki/Media_cross-ownership_in_the_United_States