Credit: The Color Purple/Warner Bros. HBO was, for at least a couple of generations, the home of movies on cable. No one else could quite compete. So the rise of HBO Max seemed like it could well have been the ultimate streaming destination for movie lovers—a designation that the jury's still out on, especially given the decision to drop the "Home Box Office" portion of the name in favor of the simpler, but more generic, Max. Still, Max maintains a collaboration with TCM, giving it a broad range of classic American and foreign films, as well as much of its...