So they had high taxes, massive redistribution that was basically compulsory. The policy was, use it or lose it. You spend it, or we spend it. You don't like how we're spending your money? OK, find a way to spend it differently, take a risk on a business, and deduct those expenses.
Taxes are so cheap at the top end that it's better to pay those taxes, and stuff the remaining money in real estate, the stock market, or bonds, than it is to take the risk on a business. Being a greedy hoarder should be very expensive in terms of taxes. WE've done it before, the country was not killed, instead it thrived. That era of high top end taxes built massive public and private infrastructure.
It's the greedy hoarders who are killing the country. Below a certain level of wealth, saving money is very good. Above a certain amount of wealth, it's very bad. Draw the line to make it really punitive to stay above that line.
Otherwise, you're just a cranky advocate for aristocracy, and oligarchy. And that's what'll kill a country.
Aristocracy is how you turn every damn thing into a product including life. Oh you're sick but you can afford health care, too bad, life is unfair, you die. Oh you're wrongly accused of murder, can't afford a good lawyer, have fun in jail, bye. It makes the entire society untrustworthy, and its stability is specious falling apart abruptly and violently. And that's what we should be trying to avoid.