One of the most famous children's shows of all-time, Sesame Street was created for PBS by Joan Ganz Cooney and Lloyd Morrisett. It was the first time the producers and writers of a children's ...
(In VanDerWerff's more direct words, "PBS doesn't own Sesame Street".) HBO, flush with capital from their subscription-based business model, can afford to keep Sesame Street in the black.