With an estimated $257 million worldwide opening, “Spider-Man: Homecoming” is about as unmitigated a success as is possible for a movie.
That’s been a rare sentiment this summer. Franchises like “Transformers,” “Pirates of the Caribbean,” and even “Despicable Me” are showing signs of fatigue and have begun banking more on the international market. The domestic box office has slumped about 8 percent below this point last year for the season. Nowadays, getting people into movie theaters can seem like a heroic effort.