a wealth tax of 1% reduces the return on the stock market for that year to 6%, but it compounds onto follow-on years; if you "wealth tax" every year, that effectively lowers the return on the market very dramatically. If the returns on the stock market are lowered dramatically, you will see a huge slowdown in the economy.
the point of this is, there isn't really such a thing as a "wealth tax", it's just a "multiplied income tax". it might be different in your head, but you're wrong, it's not different in reality. you are welcome for the free education.
the question is, why is the only thing you can think of "take money from people who have it". that's a zero sum game, no wealth creation. What makes market economies so wonderful to live in is their wealth creation.
Why does Elon have so much money? wealth creation. Here's why: without Tesla, the roads would not be empty of cars, people would just buy different cars. There are other car companies, GM, Ford, Nissan, Honda, Volkswagen, etc.
Tesla is not taking your money. Tesla is offering an alternative car to buy with your money. With no Tesla, you would plunk your money down on one of those other brands, but if you like Tesla's better, you buy one of those. That creates happiness, you are happier spending your money on a Tesla than on the alternatives. That's the money that Elon is collecting, GM's money and some extra for your excitement/satisfaction. And he deserves it because he created it and you are happy that he did. You would not be richer without Tesla. You would buy a different brand, and be out the same amount of money, and enjoy your car less. So when you think "we need to take Elon's money" you are essentially saying "I wish Elon didn't exist and I want the crappy Nissan for less money". That's a spiral into the ground because the other company's don't put as much value into their cars as Tesla and if you paid them less, they'd produce less.
If your response to this is "I would never buy a Tesla, I don't even like them", then I will just shake my head sadly at your inability to learn even more.