Warren Buffet didn't invest in bitcoin because bitcoin poses a threat to the current banking system and government control. Two of the main things that made him the richest person in the world for so long. He is one of the primary beneficiaries of the current system. What benefit is there for him to change everything? He's too old to pivot to something new and that new thing might make the word *gasp* a more equal place. The same thing goes for Bill Gates. I think older people just want to keep things the same and not have to worry about any new fangled technology that leapfrogs everything else.