Their wealth is not a pile of cash or a number in a bank account, it's ownership of the companies they founded. Every year, they would be forced to hand 5% of t

Their wealth is not a pile of cash or a number in a bank account, it's ownership of the companies they founded. Every year, they would be forced to hand 5% of their shares over to the federal government. If such a tax were implemented 15 years ago, all Fortune 500 companies today would be controlled by congress and Donald Trump. Also both SpaceX and Tesla would have almost certainly gone bankrupt in late 2008 as Musk would not have had the wealth to support both of them.