12 months ago, it was hold overs from December that kept people going to the movies. Jumanji: Welcome to the Jungle, Star Wars: The Last Jedi and The Greatest Showman all were still doing well, putting up around $100 million a piece just in 2018. Today, only Aquaman has been able to match that feat, and only one movie that’s opened this year, Glass, has been able to do the same. Part of what makes the summer movie season work is the momentum of people who plan to go to the movies during that period. While release dates play less importance than they once did, that momentum has been largely stalled this year. Going to the movies just isn’t what people are doing with their weekends right now.
Article source: https://www.cinemablend.com/news/2466771/why-the-lego-movie-2-didnt-work-at-the-box-office