Nobody has ever made a billion dollars running scams.
Even Bernie Madoff only made like $100M or so running one of the largest ponzi schemes in history.
You don't become the head of a major international corporation from running scams, either -- someone might be able to pull off one or two but reputation ultimately precedes you in business, and the BOD of a company like Head would vet any potential leader very, very carefully.
Johan had a reason for selling. Whether TMPS goes lower or not is debatable; what is not debatable is that Johan made his fortune as a scam artist.