Like people who own tons of Bitcoin or crypto but bought them without KYC? Either before KYC was a thing, or bought them through methods that did not involve KYC?
And how many people do you think hold a lot of wealth, who did buy with KYC, but anonymized them for privacy. Not for committing crime, but just mixed or XMR converted their btc and back to get anonymous bitcoin and are whales. Moving markets but no one, not even the US government, knows who they are?
Usually people who are blue whales are encouraged to invest in cryptocurrencies where no one will trace who they are. No one will get any of their information. Because all the addresses are anonymous. Especially those who are blue whales or big investors will always try to hide them self. In this case they try to hold their assets without KYC. As it is anonymous so it is not possible to count properly.