Why Mark Zuckerberg May Never Pay Taxes Again: Buy, Borrow & Die

CNN op-ed:  Zuck Never Has to Pay Taxes Again, by Edward J. McCaffery (USC):

So, you think you have it bad this tax season. Have you heard that Facebook founder Mark Zuckerberg will pay between $1 billion and $2 billion in taxes? That sounds like a tough pill for anyone to swallow.
But it is premature to start a pity party for Zuckerberg. The twenty-something billionaire reaped large financial gains from exercising the stock options that triggered his tax bill, and he has benefited from favorable tax rules along the way. Even better, Zuckerberg will survive his encounter with the tax man in a position to never have to pay taxes again for the rest of his life. ...
The truly rich do not have to pay any tax once they have their fortunes in hand. They can follow the simple tax planning advice to buy/borrow/die: Buy assets that appreciate in value without producing cash (like shares of Internet stocks), borrow to finance lifestyle, and die to pass on a "stepped up" basis to heirs wherein the tax gain miraculously disappears.
Zuckerberg now has $11 billion or more with which to play this game. He can live off money borrowed against that huge sum (rest assured, he can get good interest rates), never having to sell any asset at a gain, and never having to get an "ordinary" salary again.

(Hat tip: Tax Prof Blog)