Scientology, herbalife, and other obvious scams have persisted. I think crypto people love getting defrauded, and as long as they enjoy it there won't be much pressure to prosecute.
And in general religions are in business of extracting money from people and using it for their own means. Scientology is not any different from any other. Including the mainstream Christian cults...
And their means both as determined by their doctrine and expressed by their history vary greatly. In the US religions have been legally defined (a subject of much debate historically) as they are given tax and regulatory exemptions and often public funding. Here’s a good read on the topic from 1969:
In Christianity, god extorts adherence through the revelation that there’s eternal life after death and the threat of eternal damnation as punishment for insubordination. The requirements to enter Heaven are acknowledgment and acceptance of Jesus’ crucifixion as atonement for your transgressions (and possibly repentance).
In Islam, god extorts adherence through the revelation that there’s eternal life after death and the threat of eternal damnation as punishment for insubordination. The requirements to enter Paradise are not explicitly defined (aside possibly through dying in a Jihad) so strict adherence is arguable more crucial than in Christianity.
In Scientology, god extorts adherence by eliciting confessions of past transgressions on videotaped counseling sessions and threatening public exposure for insubordination, among other tactics.
