Producer Jason Blum thinks stars and filmmakers deserve a piece of the profit from their work. So naturally he opposes a push from studios to pay Netflix-style flat fees instead. But that didn’t stop him from taking a big flat fee to make three new “Exorcist” films. Blum weighs in on big battles underway in the industry, including Scarlett Johansson's lawsuit against Disney. He hopes it’s the first of many.