Yes, superhero films are destroying the world.
This is an old discussion but one that's been ongoing for the last 10-15 years. Hollywood needs franchises. For franchises, you need content and IP, and years of source material. It's not easy coming up with a new idea that isn't some kind of rehash of something previously made.
That's why directors have their hands tied. Auters may have a great film idea that isn't based on anything, but they don't have 3-4 films worth initially. In the event the first movie is a hit, the sequels tend to suffer because the creators can't maintain that level of creativity to sustain a novel concept. They go out of business pretty fast.
Most of the Oscar bait is based on historical characters or period pieces or contemporary social commentary. This will always be the case. No need to franchise those stories and characters that can be told in a single film.
But to pay the bills, things have to be franchiseable. Otherwise Hollywood ain't going to green light it. They need a hit every quarter to recoup the losses on other pictures.
In short, if it's not Batman, it's going to be something else. Obviously a series of novels. Comics will be exhausted. Then you have to look at video games, which we are beginning to see this summer. Fairy Tales will be a large part of the Disney slate. Remakes of franchises from yesteryears. Cartoons and toy lines have and will continue to be franchised.
The next step is franchising virtual reality. You want to create films and stories that the individual can partake in. The new approach in film, say 2050's, are those catered to the individual in the living room wearing a helmet that stimulates sensory experiences in addition to visual information. Theaters will be obsolete. You will buy a film and star in it yourself. It will initially be a Total Recall, but the true test will be to not only be mentally conscious of the story but to physically interact within the virtual world as well (wield a prop, run and jump, and have ability to make decisions within the story). If you are interested in film but can't produce anything of note, I'd suggest looking at investing opportunities there. Disney, Apple, Google, and Facebook have started investing in preliminary stages of that.