The first time I watched WMMA was the very first Smackgirl show. WMMA has come a long way since then. The number of fights, promotions and female fighters has steadily grown since then. These numbers increased steadily for 10 years before Rousey had her first pro bout. Now, with Rousey's influence on young female athletes out there, I think we'll see even more women entering MMA. I'd say the OP is dead wrong - completely backwards, 180 degrees askew and pointed in the wrong direction. WMMA will continue to grow (even faster now)...and new stars will be born after Rousey retires.
Jarl