Where are the kick-butt female superheroes?

I mean, think about it. This article has a good point. We don't see a modern-day Wonder Woman. Buffy and Xena aren't big screen material, apparently, in Hollywood's eyes. Lara Croft and Kill Bill's Bride aren't exactly role models for the kiddies. Many cool kick-butt chics end up as side-characters (Elektra in Daredevil) or part of a team (Rogue, Jean Gray, and Storm).

Oh, speaking of super-hero teams, I love that Olympics ad. American athletes get calls on their secret cells and run off to save the world - each with their own "talent"/ sport.

Think of the great chics (not derogatory, I just think "women" is stuffy) on TV now. Syd Bristow in Alias is awesome - very awesome. Tru Davies doesn't necessarily kick butt but uses her unique "gift" to save lives. Why can't we get characters like that on the big screen?