I think billionaire are investing and they are the real ones who are running this game. Most of the billionaires are businessman, and i know that businessman are also investors i think some billionaires are investing in bitcoin because almost of them are risk taker that is why they are billionaire also they are smart in doing this thing they always do more analization before investing in one investment site.bitcoin is famous among billionaire as the huge investment on bitcoin only a billionaire can do.