Newspaper publishers have licensed articles for millions of dollars. Record labels have filed lawsuits. But when it comes to the commercial potential of artificial intelligence, movie studios are off to a much slower start.OpenAI has spent months talking to the industry’s largest studios, including Walt Disney Co., Comcast Corp.’s Universal Pictures and Warner Bros. Discovery Inc., about the creative and commercial potential of Sora, according to people familiar with the discussions. OpenAI has ...