At the time, when cable television was becoming popular in rural areas, he sold special programs to hotels through his Teleguide service.
According to Variety, Dolan signed a deal with New York to run cable to some of its Manhattan buildings in 1964, and a few years later, he installed cable to watch the Knicks and Rangers playoffs in hopes of attracting viewers. It is said that they have signed a contract to air it on TV.
He then founded the Movie Home Box Office and sold both cable service and HBO to form Cablevision, which would eventually bring television and internet to households in the northeastern United States.
In 2015, the Dolan family sold Cablevision to European company Altice for around $18 billion (about £14.3 billion).
By then, Dolan’s son James was running what The New York Times called the family empire.
And, according to the New York Times, the Dolan family’s dissatisfaction with the Knicks’ performance and a dispute with the network over programming that prevented customers from watching the Academy Awards and the Academy Awards ceremony meant that “The New Yorker The family had grown to hate each other. World Series.
Mr Dolan was worth $5.4 billion (£4.3 billion) at his death, according to Forbes magazine.