Avengers: Endgame‘s writers explain that Tony Stark’s story had to continue through other movies and not Iron Man 4.
In a recent interview with Vanity Fair, Avengers: Endgame writers Christopher Markus and Stephen McFeely explained why a fourth Iron Man solo film would not have made sense.
“Whether you like all of the [23 Marvel Cinematic Universe] movies or not, the capital that Marvel built up allowed them to do things like make a movie starring a raccoon and a tree, right? You would’ve already had Iron Man 4 if it was any other studio.” McFeely said. “But they decided, ‘No, we’re going to take chances on all these other things.’ To put a flag in the ground and say, We’re going to end something and take characters off the table, is, I think, kind of daring, but selfishly it was really great for us. [The story] needs an end or it loses meaning. The end is what cements the thing, to actually sew it together and bring it to a crescendo, and yeah, take people off the board, finish their arcs. If Tony made it out the other side, and Iron Man 4 was waiting there, you’d be like, [shakes head] ‘One too many…’”
Aside from the Iron Man trilogy, Robert Downey Jr.’s Iron Man has appareled in The Incredible Hulk, The Avengers, Avengers: Age of Ultron, Captain America: Civil War, Spider-Man: Homecoming, Avengers: Infinity War and Avengers: Endgame. He and Samuel L. Jackson’s Nick Fury were tied at 10 until Spider-Man: Far From Home, which put the super-spy at 11 appearances.
Avengers: Endgame is now available on Digital HD, Blu-ray and 4K UHD.