I have a 20 year old son involved in this scam

He is easily led and has spent the last two years throwing money down the drain and destroying all of his family and personal relationships over this “business”. He wasted two years of college and now has decided not to go back because “he doesn’t need to go to college to be successful”.
This decision is supported by his “upline” and the rest of the idiots that are making money off a kid. I am at my wits end. He is totally brainwashed, we (his father, brother and I) can’t get through to him.
I am heartbroken to see this great kid go down the drain mentally, physically and financially. Any suggestions?????