Do you think you'd ever make a Gears game with a female lead?
That's certainly interesting but I don't know. If you look at what sells, it's tough to justify something like that.
This is why nothing will change, if studios aren't willing to take a risk then of course things wont advance. just ocasionally people should look beyond money, I mean look at the success of the new Tomb Raider - proof that female led games can and do work without taking anything away from the experience
and if someone refuses to buy a game because it has a female lead then they shouldn't have the right to game at all