Someone who already have a multi billions dollars won't be thinking of investing in Bitcoin, most billionaires don't have trust for Bitcoin and at the same time may not have the time to monitor and go through Bitcoin investment stress any longer since they are already stinking rich and have e successful businesses already.
The average class and youths are the most fan of Bitcoin, and not the old rich fork's, those guys will only gamble with Bitcoin Price for short term profits, and they don't have long term investments plans or trust Bitcoin to survive for a life time.