Veteran of the Psychic Wars
It's quite hard for a professional FSM to walk away, because they would have to be able to admit to themselves, not just that they fell for a scam, but that they spent their lives scamming people out of their money for a fraud.They have been in for over 20 years now and they are still hard core. They make living by selling scientology. I don't think they could quit even if they wanted to.
But they CAN quit. Just because quitting would result in (hopefully short-term) financial hardship doesn't make it impossible.