I think that the wealthiest people usually hide their personality. Bitcoin gives them privacy so i don't think that we will hear their names.
Naturally, most of them will stay incognito. Most of the heads on the leading projects like Ethereum, NEO, Binance are among the richest people that have cryptocurrency. Meanwhile, the crypto market has such people as Tim Draper. He started thinking about cryptocurrencies fifteen years ago when he met a guy in South Korea who bought a virtual sword for his son for cash. Draper bought BTC for the sum of $ 250,000 while the price was at $ 6. Now he has about $ 500 million.
I am not even sure that the main people that have money in cryptocurrency is even known because just recently, I saw some threads on how someone moved about 1 billion dollars within the market and that would surely be a transaction that belongs to one person, or it could be group of person anyway, but people really have money in cryptocurrency and they are extremely rich people which you would not even know.
I would not also be surprised if we have some government money in the bitcoin market also because we would have some that would believe in it but will have to carry out the transaction is covert way where it would not be much known to people. I hope that one day, I can also join the group of richest people in cryptocurrency.
actually many of those wallets with over a billion dollars are owned by exchanges. These large transactions are made by The exchange to move funds from one wallet to another for their operational purposes.
As for the government, well yes the FBI is already involved with cryptocurrency and has been for almost ever since it was created. They have been investigating the Silk road and their legal activities involved with Bitcoin.