im not really sure if they would do that cause many of billionaires or the top billionaires in the world wouldnt have bitcoin or doesnt need bitcoin to succeed. i think bitcoin is not good at all on millionaires. maybe we could buy bitcoin but not all billionaires or even millionaire dont have mindset to buy bitcoin cause they are have their own ways to become rich and that what they do thats why they in their position right now. just waiting our luck to become rich also.