Plus at societal scale "wealth" doesn't necessarily work the way it does at the personal level. I can go to the gas pump and buy as much gas as I could personally want at the price posted on the sign. You'll find that if you stepped out and tried to buy ten billion gallons of gas at that price that the situation will change in numerous ways. Confiscating the "wealth" of the rich and trying to use it to buy things that nobody is even making right now is not something you can casually assume will work; the economy itself will need time to adjust before it could even supply the desired goods at such a different scale.
The point here being not that it's impossible, or even undesirable, but merely that naively taking stock of what "the wealthy" have by current measures and assuming you can confiscate arbitrary amounts of it and use it to buy arbitrary amounts of consumer goods without having to account for any of the prices of the goods involved in that operation changing in the process isn't effective.
You gotta be careful of the Laffer Curve[0] though. Tap into the rich too much and they'll leave. Make it illegal to leave... well, your country is going downhill fast.
The exact value is near impossible to pinpoint, but you can find it by gradient methods. One thing for certain is that it's lower than the rate I currently pay. ;-)
the laffer curve and supply side economics is junk/propoganda masquerading as economics. It's about as real as the scientific studies exxon releases against global warming.
