People of that belief stealing from the rich is wrong always are misguided. That belief lets financial abuse go on unchecked,and the rich DO abuse and rob us everyday.They have no inner sense of others pain,so if you steal from the richest,abusing power,you are in fact just.Taking the weapon (money&power) away from the abusers that misuses it to make others suffer via theft reduces the big thieves ability to do harm. Most people wouldn't be quibbling about theft if it was stealing a weapon from a criminal,intent on using it to hurt someone.
So if some rich asshole CEO /corporation exploits people's misapplied morality via wealth& power it is morally correct to disarm them via theft.

Presumably, there would be no further I'll gotten gains.

Rather short-sighted, much as I agree with sentiment.

amount of people just took it away, using every path to take it back the rich would not be able to fight an overwhelming amount of thieves coming from everywhere inside their corporations and everywhere else at once.
The cops can't catch a million faces acting in random.

Once you "take it back" you don't get to take it back again. It's gone. You have it. Now what do you do next year to cover your budget shortfall?

on the way out.

off the backs of the working class through shrinking wages and benefits, tax cuts leading to cuts in vital public services, infrastructure, education, and so forth?

The uber-rich don't work for their wealth, they *steal* it. They make the rules of the workplace, they crush the bargaining workers, they effectively elect the leaders that codify and enforce those rules.

Your question is backwards, man.

What is happening now is not sustainable. Conditions for the majority of working people are getting worse while wealthier increase their holdings and power on a practically exponential scale.

Short-sighted? Yeah, the system we have now is pretty short-sighted. Wealth is accumulated based on a theory that assumes constant growth and 'progress'. Problem is, they are running out of resources, labor, and markets.

How much more can be stolen from people who have nothing? People who work their asses of and can't make ends meet while the super-rich play with their futures and bank off of dividends?

Backwards.

Actually, I am looking forward. I am asking what happens next year when you no longer have those profits to take. How do you cover your budget imbalance then? You need a new means to raise revenue.

That's exactly the right question, but your framing is a little odd. Why are you worrying about future revenues? You seem to be suggesting that the money will then vanish and economic activity will come to a halt. Expropriating (and redistributing) wealth probably wouldn't do that. It's more likely to have a stimulative effect.

The real question is what changes need to be made to the legal structures that shape the economy in order to produce more desirable results - today we live with an unstable system that produces dramatic inequality (and inequality of opportunity, which is especially worrisome), and erodes democracy.

One way to steal is to share,withhold your labor ,and there are many other ways besides those to take it back.Remember a few days after 9/11 Bush telling people to go out and SHOP? That is how WEAK and dependent these corporate thugs are on US.

Yearly income greater than $1,000,000? Then tax everything over that at 90%.

Net worth greater than $100,000,000? Then tax that at 10%. In other words you have to sell it or give it away. Just like ordinary people do when they have to qualify for public assistance.

Everyone who has that kind of money has benefited greatly from publicly funded services. In an anarchy they wouldn't have enjoyed such success.

And consider taxing all money transfers out of the country at 100% until poverty is under 8%, unemployment is under 3%, and the national debt is below 2% of its current amount.

Unconstitutional? No. See 26 USC 6672. Congress simply needs to adopt the concept for money transfers to foreign countries.

Unworkable? No. If someone wants to transfer $1,000,000 out of the country, let them come up with $2 million and pay $1 million to Uncle Sam. If they want to transfer a dollar, let them come up with $2 dollars.

Survival tactic.