I agree with the above post. A friend of mine is a UFC avid watcher is quite dismissive of boxing...to me they are seperate sports that will survive in their own he thinks that it will over take boxing, I doubt it.
You also have to remember that UFC is only one championship belt as well. It's a company that's doing very well to spin major stars, who then in recent years have failed to live up to their hype. But there is other companies who maybe haven't sold there product as well.
I will never really enjoy MMA as much as boxing, it's just too graphic for me firstly and I do lose interest when they hit the floor. And as I love my boxing, the striking annoys me with lack of movement in the head as well as body. But I will still enjoy the events, they are well put to gether and you get more competitive fights than you get on the whole in boxing, but that's a marketing issue rather than the sport it's self.