The Marvel Cinematic Universe is in dire straights right now. It's a massive media empire with instant access to several of the most beloved fictional characters of all time, but every run ends eventually. Any franchise that's used to raking in billions will start to realize that their endless growth is unsustainable. Disney needs every film to shatter a box office record, and they're getting increasingly desperate. Their recent Robert Downey Jr. announcement demonstrates their willingness to stay in the past. Spider-Man: No Way Home felt like a celebration, but it might have been a farewell party for the franchise.