I'm not too familiar with the film industry, it just feels like SO many superhero movies are getting released recently, that they blend together as the same film in my head. It reminds me of the slasher films of the 80s, they feel endless...but I'm no business expert, and maybe superheroes will keep growing and growing, but I can see their popularity starting to slide down in the next 5 yrs or so.
I was being sarcastic with one part of that post, but not about how I think superhero fatigue is imminent.