Much like DC comics the only thing WB knows how to do, the only thing they want to do...is BATMAN.
That's it. That's all they want to do, but stupid Marvel had to go make the Avengers. Rather than admit defeat and come to terms with the fact that the Superhero Movie boom is winding down they have decided that the only way out of the hole they dug is to keep digging but this time (to borrow a very old joke from "The Simpsons" when it was still good) dig upwards.