Later in the article: "Puerto Rico offers an unparalleled tax incentive: no federal personal income taxes, no capital gains tax and favorable business taxes — all without having to renounce your American citizenship." In other cryptocurrency news, see How cryptocurrencies are being used to evade sanctions (Axios)
"Dozens of entrepreneurs, made newly wealthy by blockchain and cryptocurrencies, are heading en masse to Puerto Rico this winter. They are selling their homes and cars in California and establishing residency on the Caribbean island in hopes of avoiding what they see as onerous state and federal taxes on their growing fortunes, some of which now reach into the billions of dollars.Making a Crypto Utopia in Puerto Rico - The New York Times
And these men — because they are almost exclusively men — have a plan for what to do with the wealth: They want to build a crypto utopia, a new city where the money is virtual and the contracts are all public, to show the rest of the world what a crypto future could look like. Blockchain, a digital ledger that forms the basis of virtual currencies, has the potential to reinvent society — and the Puertopians want to prove it."