No doubt Bitcoin has become a stepping stone of massive wealth for the Saylors MSTR family. They could be the top leading richest Bitcoin investors in history of Bitcoin investment.  Though it seems they are still at the table of 3 or 4 and with the percentage holding of about %1.34 percent holding of the total number of Bitcoin holding after Satoshi Nakamoto and others. I know by know Michael J Saylor would be regretting why he didn't invested this amount earlier before now. It is also a good news to the cryptoprenuer because the amount invested in bitcoin by Saylor will boost the growth of bitcoin.