‘Avengers: Endgame’ is the biggest movie ever again, 7 years later—and it says a lot about the future of Hollywood’s IP machine

Seven years after it first hit theaters, “Avengers: Endgame” is once again the highest-grossing movie of all time. Disney and Marvel Studios brought the 2019 blockbuster back to theaters on Sept. 25 as “Avengers: Endgame Encore.” The new version adds a few minutes of footage teasing December’s “Avengers: Doomsday,” plus an introduction from Robert Downey Jr. and Chris Evans. It topped the box office right away, grossing $26 million domestically and $86 million worldwide in its opening weekend. That’s the third-best domestic debut ever for a rerelease, behind only the 1997…