On a cultural level part of me feels we are about to see a slight decline in the prevalence of the genre. Superheroes will still be around but I feel their reign as the primary driver of pop culture might be coming to an end.
Then again popular genres of the past (Western movies and gangster flicks) didn’t just end. They were replaced by something. And I really don’t see anything out their right now with the potential to replace superheroes as mass popular fiction.