Although the transaction was part of a blockchain, that does not make it illegal. Neither does it make any investment in crypto a way to finance illegal activities. What if you wanted to crowd fund a technology - isn't that what this is? It is not intended to fund Sheikh Yuk-a-Puk. As for the gain escaping taxation - isn't that yet to be seen? Good grief, who knows whether they made estimated tax payments or not? Finally, if there are tax consequences, the owner/s may decide that $400 million is enough to live comfortably in a tropical paradise with no extradition treaty... just saying... There are a lot of issues; no resolution will be easy. The SEC is trying desperately to stop ICOs and call them "securities", the IRS wants to tax people making gains and nobody can agree on how to handle this political football - even if they could find out who actually makes gains ... We live in interesting times.