He eventually set up his own film and photography company, obtaining the exclusive rights to footage from 1967 International and Universal Exposition or Expo 67, as it was commonly known in Montreal.
Astral slowly evolved into a pure play media company and expanded through the acquisition of pay television channels, such as First Choice and The Movie Network.
[2] Harold was a staunch advocate of the viability of Canadian and Quebec cinema, going on to play a large role in the cultural exemptions included in the North American Free Trade Agreement.
In 1992, he was made a Knight of the National Order of Quebec and a Chevalier de la Légion d'Honneur.
[1] Greenberg recognized that there was a demand for well-written Canadian scripts, but insufficient resources in order to fund them.