What? Bitcoin has been adopted and accepted as new form of payment method by some countries though local exchanges were regulated to prevent money laundering. Are you not aware of that?

Those Billionaires has a lot of things to cover up their wealth so it is not sure whether Warren Buffet is telling the truth just to play safe about his holdings that is the spirit of decentralization Everything can be done in secrecy. Bitcoin will not end badly because it's journey has just begun.