Are you purposing the governement take 99% of ownership of endless corporations? That's pretty much what would happen, if you taxed 99% of billionaire's wealth.
And if you did that, who would the governement sell the shares to? Remember, you just taxes those nasty billionaires, taking 99% of their wealth, so there is no one to sell those shares to.
And next year, there are no billionaires left. And likely the economy has crashed, because yeah, the government knows how to run large corporations well.
All that "billionaire" means, is that the person directs private enterprise. Get over it. We need leaders, and they're it.