Billionaire are making money in this kind of industry in trading and investments you know why they will let their money again work for them it is just like bitcoin if they will stock they will gusranteed of their profit brcause they the one who knew or they the reason why bitcoin demand becoming in demand , the volume of coin kee increasing that is why price is increasing those billionaire are using bitcoin and im sure with that facebook ceo billgates and others are using bitcoin too.