It is just a time for superhero movies, and it will pass. In the early 1990's, war films are the kings. In the early 2000's, sci-fi and comedy are the favorite films that people like to watch. If I'm not mistaken, around 2010, the rise of superhero movies has started. As long as there are people who will watch the superhero genre, then Hollywood will produce more of these. On the side note, I can't wait to watch part of the Infinity War.