Eh - I think you're overreaching. Heavenly Sword was not that successful and female superhero movies have historically not done well. Supergirl was a blockbuster failure and the more recent ones of note have equally been unsuccessful (Elektra, Catwoman, Aeon Flux, and Barb Wire). Even Salt with Angelina Jolie turned out to be ho-hum at the box office. Tomb Raider is an exception, but not a big one. It'll be interesting to see if Besson's Lucy does better with Scarlett - though I'm skeptical.
I am not saying it's not possible, but there is some rationale to the WB AND Marvel's reluctance. Powerful female heroes don't seem to attract much attention from moviegoers. That may have more to do with the moviegoing demographic, however. More women go to the cinemas. More guys read comics and play videogames, though that said, even videogames with female leads don't do very well (Remember Me - bomb, Wet - bomb; even Tomb Raider's latest foray took a lot of marketing muscle to get it to a respectable sales figure -- and recall that the game was essentially ported to every platform available to get it there).
Wonder Woman's origin is, frankly, ridiculous, even by comic book standards. I'm not convinced she can be translated to the big screen without some big compromises. Look at Black Widow -- I mean, the movies don't even try to tell you where she came from.
We'll see whether Snyder tinkers with her background to make it work. There is already a lot of rumors that Gadot's version will have ties to Superman's Krypton ...
