No one understands that. I consider that element of the cash of millionaires truly invested in bitcoin, but only amusement. In simple fact, millionaires cash does not stand in the garage in luggage. Their cash is invested in the business and I question that the bitcoin precedence.
Billionaires do find a place to invest, but they wont have much interest on Bitcoin, cause there are bigger deals around. They can invest on Facebook stuffs, Google, and a lot more of the big deals around.