BINGO! is gambling. They've already come out and said too much against it to use it as a money-maker now. Although, I sure if there was a way for them to do it covertly, like flipping real-estate without the flock knowing what's going on, I'm sure they would.
Televangelizing makes them look too much like every other religion on the street - and they're all about looking different, separating themselves from mainstream religion.