yup. and if their audience thinks that makes them racist and leads them to boycott the show, the free market is working!
The problem with this logic is that you let people suffer to come to a solution of the problem, in this case by being discriminated.
This is always the problem with "let the free market correct itself" logic. It's comparable to how advocates of the free market think every employer should be allowed to fire all their employees overnight for no reason at all. "If an employer does this, their company will go bankrupt and the free market will have corrected itself once again!" Marvelous, too bad all the former employees have died of starvation in the meantime.