The Cablevision founder helped usher in a new era for television. He also acquired sports and entertainment properties including MSG and the New York Knicks.

Charles Dolan, who helped pioneer pay television, is dead at 98, his family confirms. He founded HBO and Cablevision, among other ventures.

Per CNN, Dolan was also a founder and chairman emeritus of The Lustgarten Foundation, which conducts pancreatic cancer research. According to Forbes, Dolan and his family have a net worth of 5.4 billion at the time of his death.