studios need to learn the difference between trends and cult followings.
Comic movies aren't successful because thats the style now. They're sucessful because all the fans who grew reading them and watching the cartoons are now grown with their own disposable income. The X-men came with a fanbase already. It wasn't some flash in the pan hit. My pops had been reading that shyt since the 1970s and turned me on to it in the 90s.
That said not every comic character has a devoted fan base. Of course X-men and spiderman would be successful, they were the most successful comics. But other properities are still at risk of flop. My motto is if the character had a successful solo comic series they can have a successful solo movie. If nobody read that characters comic, chances are it might still flop as a movie. Case and point: Hulk, popular character when teamed with others in the comics. But his solo runs tend to below average number except for few select arcs. His Cartoon series in 90s was not the least successful but wasn't close to the most successful either. And low and behold his solo movies followed that same trend.