Maybe sooner those billionaires will invest in BTC, once the BTC gain more popularity, stability and legalization.
for now I heard few names are showing interest in BTC, but I believe billionaire in this planet are starting to be curious and studying what is BTC business all about.

I'm sure a lot of new rich people from bitcoin and this week there are many who become new millionaires because the rise in bitcoin prices in a week reaches $ 1000, we must immediately invest and never delay because we will not find a cheap price.