It would be perfectly fine for corporations to pay comically low taxes--- IF they also had NO ability to fund large-scale lobbying operations and were not allowed to put unlimited amounts of money into political campaigns. That's NOT ever going to happen. But now is the best time for the tax part to change. The economy has been floated by unprecedented government pay-outs, narrowly avoiding a deep depression that wou…
Corporations enjoy signficant benefits of being in the state, including, for example, a police force that protects them from attack, and a legal system that will resolve disputes they have both internally and with others. They should pay reasonable (not low) taxes in any event, not subject to the caveat you identify.
Everyone that gets a dividend pays tax.
Everyone that enjoys capital growth pays tax.
Just looking at the direct corporate tax rate is grossly myopic.