Let’s use The Sanders plan because it illustrates the negative consequences easier. An 8% wealth tax would be paid by those with say $50 million or more in net worth. You can go to a billion net worth if you want; the problem is the same.
The assumption of a wealth tax is that rich people only do stupid or irritating stuff with their money and don’t deserve it. I mean, thing about it. Elon Musk is building new businesses and technologies with his billions. How rude. Those created jobs are not worth it if we as a society must look at a billionaire like Musk.
Yes, I’m being facetious. That is the point. How can Musk create the technologies of tomorrow that will benefit the nation and environment, create jobs, and provide better products without the resources to do so? I don’t know if anyone has noticed, but it takes serious cash to start an electric car company, solar company and a space travel company. Without the super rich these dreams would go unfilled along with all the jobs.