Who is Harry Friedman from Hollywood: A Novel and what is their importance?

Friedman is the film executive who agrees to produce Pinchot's film, which is based on Chinaski's script. Friedman's character is based on Menachem Golan, who was a partner in Cannon Films. Described as large man, Friedman is also portrayed as a bully, who is self-indulgent, controlling and insensitive.