The House of Gucci director, who has spoken negatively about comic-book based films before as well, was asked by Deadline about his main gripe with the superhero genre.
Because Marvel is actually designed for that specific thing, they just had to switch the medium from a gazillion different comic book series to a gazillion different movie series. Endless expandability is built into capeshit in a way you don't have with other mediums. Look how they try to squeeze as much from the orginal trilogy as possible into each new Star Wars movie so it remains recognizable, which leads to the franchise being stretched thinner with every iteration. You don't have that problem with Marvel, you can easily make a Thor or Hulk movie where none of the other Avengers show up, you can also cross them over with other stuff any way you want, it's how this stuff is supposed to work. If there weren't IP issues with Spiderman and the X-Men, they could probably milk that franchise for another decade or so.
Because Marvel is actually designed for that specific thing, they just had to switch the medium from a gazillion different comic book series to a gazillion different movie series. Endless expandability is built into capeshit in a way you don't have with other mediums. Look how they try to squeeze as much from the orginal trilogy as possible into each new Star Wars movie so it remains recognizable, which leads to the franchise being stretched thinner with every iteration. You don't have that problem with Marvel, you can easily make a Thor or Hulk movie where none of the other Avengers show up, you can also cross them over with other stuff any way you want, it's how this stuff is supposed to work. If there weren't IP issues with Spiderman and the X-Men, they could probably milk that franchise for another decade or so.