To create a handle that would be worth the effort, the casinos would have to offer games on the wire (a point spread, in effect) and an over/under on total games in a match. They could even offer micro betting on who will win the lag, who will win the first rack, who will commit the first foul, whether a player will three-foul, etc.
Imagine how easy it would be for players to have surrogates place bets for which the outcome could easily be controlled by the players, and that could allow them to make more money than the tournament winner.
If I ran a casino, there would be no chance.
I mean, I know that players are always on the up-and-up and never conspire via text messages to fix the outcome of a match, or anything like that... but I would still take a pass.