Because if you don't do that, then rich people would just give their money to a corporation to "hold" for them. This already happens anyway, but regulations try to restrict it.
Eliminating corporate taxes would not change the fact that corporations want to tilt politics in their direction. There are other suggestions for ways to compensate for the differences between personal income and income to a corporation you own, but they always have to be designed to be cognizant of the way people will game the system.
Eliminating corporate taxes would not change the fact that corporations want to tilt politics in their direction. There are other suggestions for ways to compensate for the differences between personal income and income to a corporation you own, but they always have to be designed to be cognizant of the way people will game the system.