If personal ownership of the whole or part of a corporation is possible, and that this ownership can be traded or sold, the existence of multi-billionaires foll

If personal ownership of the whole or part of a corporation is possible, and that this ownership can be traded or sold, the existence of multi-billionaires follows rather directly. "Not allowing" billionaires to exist essentially amounts to dispossessing founders from their company whenever it starts getting successful enough. I'm not necessarily against that, mind you, but it's important to see that such a policy would have wide-ranging effects on the stewardship of many companies, and to think it through: if the result of the law is to force founders to sell off most of their stake to other capitalists in order to spread their "wealth", their companies could become even more immoral or exploitative as a result. I think it might be better to simply nationalize something like 0.5% of every company every year, but that may also have unforeseen consequences.