[Red Badger]

....would raise $2.75 trillion over 10 years, Saez said.

No it won't. The wealthy will not sit idly by and have their wealth confiscated. They will get rid of the problem....................

[Missouri gal]

RE: wealthy will not sit idly by

That is the crux of the problem. Once your tax rate is higher than average, you lose them, either by “flight” or by tax havens and various forms of cheating. You lose the incentive for development and suddenly you’re Venezuela.