The point isn't to do anything more than appease the pitchforks. Headlines like this with vague "Taxing the rich" will just let everyone who has their own idea on what taxing the rich is be happy. In some people's minds it will bring down the deficit. In some it is about sticking it to the man more than anything else.
What will end up happening is they will make a wealth tax, companies will stay private and hide behind accounting for their income and it will shut off wealth building for many.