I have a high net worth mate who I've known for years - I've been chipping away at him for ages trying to get him to get Bitcoin, and his usual response is - "It's a Ponzi!".

Smart guy, but not that smart.

I got a message today literally saying "It's still a Ponzi!"

Many such cases, of course, but these people now have to completely rethink their stance. Some of them will change their opinion, some of those will start to stack.