millionaires and billionaires say that they have invested at least 30% of their fortune in bitcoin
30% is not prudent investment strategy, we barely have to examine the details to recognize this would not be a justified thing to go ahead with. Small amounts to capture growth is justified and yes I have seen this a few times.
If we're talking old guys, the standard reference is pension plans and the payment of an income while unwell, in poor health or at least unable to work. Of course someone in investment management has the advantage of a light load to carry in physical terms and many do carry on what they enjoy doing because it is mostly paper shifting, reading and thought as to judgement of quality of assets.
By anyones measure BTC is fast moving, volatile, risky and an emerging market never seen before. These are all factors to attract the youngest members of an economy and its been sited by many as a positive for encouraging involvement in finance and economic growth via company setups.
These are not factors targeted by someone who has already made a fortune and wishes to keep it, I'm certain from examining Warren Buffet's strategy he does not look for something like BTC or anything so dangerous. That man just wants bargains and giant companies that span entire nations, he wants a regular simple premium that does not diminish like his famous Coke shares purchase.
The super harsh criticism we hear from Warren or similar I will discount as being biased and self centered, the man has got extremely rich off trends which benefit him and his own good sense to 'double down' on that advantage ie. he uses leverage at least some and is bound to FIAT. Part of why Buffet got so rich is loose money and easy policy from government towards his kind of investment. He should be arguing against continual deficits in budgets, poor debt management by government but he wont ever do it because this adds upto hard money, a retraction in fiscal spending, higher rates payable on debt and a much harder economy for him to profit in.
BTC is part of the commons people reaction to decades of inflation and loss of capitalism from QE money printing and Washington DC debt. All the things that benefit Mr. Buffet in his big money operations make us the common workers worse off and chained to government expenditure rather then true capitalism which is led by the people, means of production owned by the people. We want change, he doesnt and in the end BTC is nothing to do with his opinions it just doesn't benefit his operations to be involved.
Mark Cuban is a billionaire who has invested in crypto via esports but I'm sure it was just 1 project of many.