Unfortunately, everyone knows, that you shouldn't give money to anyone with an addiction. They will use the money to support their addiction. (Those who have a cultism addiction, will only see any money as a blessing from their god/cult). Unless, an individual goes through a hard time, faces their miserable life, can they realize they have to change their life. Are they at a point of no return? How do cultists not come to some personal reality as the many decades pass? They had to be 'ignoring' a lot of 'stuff.'
When they are offered the facts/truth (medicine) about the organization, they reject and they'll hurt you. We can't help them much, when they reject offers.
Fortunately, some are seeing their miserable, empty life. Until, they face that, there isn't much you can do. As we as parents, show our children the misery of addictions, get the info out, to inform 'before,' to learn prevention in the first place. Fortunately. more are learning about the WTS, their "using" ways toward their people.
Many former JWs are very active providing an "inocculation" prevention from JWism.