AFAIK the CEO was not in America when BitConnect scam got exposed. He was in India and managed to disappear. If found, he faces 70 years in prison. Arcaro was the second in command. That's better than nothing.
He didn't defraud the rich lol. The exchange was one of the most popular among cryptocurrency users. There are no minimum and no sign up fees. The number of people he defrauded is probably in the millions.
If anything, knowing crypto, the rich almost certainly had insider knowledge and withdrew their funds before everything collapsed.