Warner indisputably has their paws on the two biggest and most recognizable icons in comics. (I'm not so sure about Wonder Woman.)
Trouble is, they seem spectactualrly inept in recent years at bringing these characters to the screen. Whoever at Warner handled the last two Superman Batman releases clearly had no idea what the comics (or even the movies) were about, and no clue what to do with them. Not to mention no trace of an idea about what makes a movie good, as opposed to crap-sandwich lousy.
Warner has already sunk millions of dollars of development money into a revival of the Superman franchise (remember the Nick Cage Supes project?) - and yet, years later, there no movie to show for it.
Maybe that's not a bad thing. Considering some of the dreadful, dreadful ideas we hear coming out of these projects (Nick Cage as Superman, Lex Luthor as The Secret Agent From Krypton,) perhaps we'd rather not see an utter disaster which taints a great franchise even further.
Don't get me wrong. I want to see a good Superman or Batman movie as much as... heck, a lot more than the next guy. But another bad movie will just do more damage to the properties than has already been done, and serve as fodder to convince moronic Hollywood executives that "nobody wants to see superhero movies any more."
We're now in the Golden Age of comic-based movies, folks. Superhero comics have been successfully launched from both popular comics (Spider-Man, X-Men) and more obscure titles (Daredevil, Blade), and movie adaptations of non-superhero books like From Hell and Road to Perdition have met with both commercial and critical success.
And there's more on the way. Lots more.