I think he’s chosen the wrong tax. Right now there is a double tax on capital, with one being the corporate income tax and the other being the capital gains tax. The capital gains tax is paid for by the owner of the capital. Nobody knows for sure who pays the corporate income tax, whether it be the owners, the employees or the customers.
We should eliminate the corporate income tax, and treat capital gains the same way we do other sources of income.
I've owned and run several corporations and been involved in the management of a couple of other corporations. I assure you all taxes are ultimately paid by the consumer. Corporations, and businesses in general, don't have a magical pot of money sitting around they can dip into to pay whatever tax the gubmint thinks it should pay at any given moment in time. Similarly, unlike the gubmint, corporations don't have printing presses in the basement churning out dollars to pay additional expenses (taxes) as they pop up. When the gubmint increases taxes on businesses it is ultimately reflected in the price of the goods or services the corporation provides. Might not happen immediately, but ultimately the consumer always pays....