Originally Posted by Roflcopter
Because it's the entertainment industry and when it comes to female entertainers they are largely dependent on their sex appeal.
No one cares about an ugly woman beating people up a la Cyborg.
And what happens when people lose interest in Rousey or she runs out of mediocre female fighters to crush?
You can't build a women's sport up based on sex appeal and we're probably 15 years away from womens MMA reaching the same level as mens and that's assuming widespread involvement which is massively unlikely.