The whole environment that made it possible for them to have a high income and keep, from instracture to law, and from defense to consumer markets, has been paid almost entirely by others.
It's the price for the locals to accept an otherwise freeloader with no ties to the place, to live in the country they've built.
They get high incomes.
Not the government, no.
Tim Cook only makes a few dollar a day and lives in a ghetto?
Surely you jest.
Obviously it'll depend on your actual implementation.
It isn't in any sense a moral justification for taxes.
Most people here are either 1. employees who can't evade taxes because of how the system is setup, or 2. Entrepreneurs who are virtue signalling because of the magic internet Karma or 3. Simply have no money and think somebody else should pay for stuff. In reality, pretty much everyone will try to avoid taxes if he gets the chance (isn't that what the article is about?).
But truth be told, there are many wealthy people that have grown up rich, in those safe countries, or have grown complacent.