Thousands of television and film writers who are part of the Writers Guild of America are in the middle of a historic strike. They’re forming picket lines in front of studios, and productions in New York and Los Angeles and shutting down active sets. The last time they went on strike was 15 years ago — when streaming’s impact on the film and television industry was only just taking shape. This time around, they are striking for better residuals and rights against the looming threat of AI, among other concerns. At the core of this dispute is streaming and how it’s revolutionized the industry.