Traditional finance can freeze and reverse funds though. North Korea can hack a bank but they can’t get that money out of the country.
Why haven’t these been operationalized? NK resorted to social engineering in their latest bitcoin heist despite there been a thousand holes in the system.
To me, this points towards these holes are near impossible for humans and traditional tooling to find and Pandora’s box has been opened, or that these holes are not open to abuse in practice.