People who argue against winner breaks seem to look at only one side of the coin--the fact that a player can run out the set without the other getting a chance to compete. To begin with, the occurrence of someone running out the set in a race to 9 or more are few and far enough between that they become the stuff of legend in our sport. We will forever be talking about Earl's million dollar run and Johnny's famous 13 and out against Busty. So let's get that part out of the way. Even the best players will not run out the set often enough to impact the competitive quality of the winner break format. The problem, in that regard, is that sets are becoming way too short. Races to 5 and to 7 at the professional level is simply ludicrous! ESPN edits down the races to 7 when necessary anyway, so they might as well allow a proper length set and edit it as necessary to fit within their artifically short hour-long format.
The missing part of the equation to which I referred earlier is that under a winner breaks format, a player is never out of a match once he gets a chance at the table, so there is never any release of competitive pressure until the last nine ball drops. Even if a player is leading 10-0 in a race to eleven, he knows that any mistake can potentially cost him the match. It makes for greater suspense, greater excitement, and a better game. Further, the element of fighting spirit is intensified with a winner break format. To see a player sit in the electric chair for 4-5 racks and then jump up and respond with a multi-rack run or a tightly controlled series of games is a wonderful thing to behold, and it exemplifies the best in our sport. It is nothing short of tragic to remove that element from the game simply because some players can't fade the chair!
The break is huge in 9-ball. Live with it!
P.S.--why doesn't anyone complain that straight pool allows a person to run out a game? After all, it occurs with greater frequency in straight pool than it does in 9-ball. Why prevent the best players in the world from maximizing their performance?