We have a similar situation on a MUCH smaller scale around here. A local bar started up a casual 9-ball tournament on Monday nights, instead of a bunch of us just hanging around, banging. Once it started, instead of just us bangers, we got 3-6 of the better league players who started playing, too. Of course they were never around all those nights with the rest of us, until the tournament started. We averaged 8-14 people for a while, pretty good for amonday night. Just $5, nuthin to it, right?
I have heard of several guys who won't play because they don't have a chance to win against those guys. Me, I love it, for exactly the reasons everyone stated here. I get a chance to play real competition instead of just banging balls around, and I get to play against people much better than me, which can only help. I have spoken with a few of the guys who dropped out, and they do plan on stopping back again, which is good.
Not the "Pro" level situation you folks are speaking of, but similar difference-in-ability issues... I'm looking forward to going there tonight to make my $5 "contribution"!
(Funny thing, last week only 6 people showed up, we played double elimination to stretch things out. Only one of the "good" players showed up, so I managed to grab second place! Out of 6, I realize, but with double elimination I played 4 of the 5 people other than myself who showed up, and beat 3 of them. Man how I chuckle at that. I'll be back where I belong tonight, I'm sure...)