From an
interview with Karen Berger:
If you write it, they will come.
As for your football analogy, comics is not equal to NFL football. Comics is equal to tv, that thing NFL football is provided through.
The superhero genre may be more like NFL Football. And just like Football, superhero fiction still has a female audience. It's just way smaller than the male audience.
If the only thing that played on tv was football, then you'd see the same thing we've seen in comics happen.
Comics are not a genre but a medium. Superheroes are a genre (with several sub-genres).
There's potential for much more in comics outside of superheroes.
Some people say that books are predominantly read by females. But then when you factor in that a large chunk of fiction is romance, cozy mysteries and young adult, it's not all that surprising.
Genres that are thought to appeal more to men, like westerns and other action-adventure type stuff (which women like, as well, btw) see much less in the way of product.
Oh, and another btw... some men also read stuff that's considered female oriented. I, myself, like a good cozy mystery and young adult fiction. Just like I don't read strictly superhero stuff.