This would be visible for all to see. At election time voters would know what a politician stood for, by knowing who the major shareholders were. Politicians would no longer need salaries or pensions. They would be available to govern. Corporations and wealthy individuals would be able to buy and sell politicians more efficiently.
Efficiency is good for the economy.
Powerful individuals and corporations would have their necessary control of the political process. Voluntary Mandated Sharing Proposal Getting elected in America takes lots of money. Their money comes with strings attached, and if they don't get what they paid for, they don't pay any more. Politicians who won't play the game don't stay politicians. It's a cruel Darwinian process of irresistible corruption.