I was not advocating that gross corporate income be taxed. I was pointing out that your statement: "for a C corp each dollar of income is already taxed at the

I was not advocating that gross corporate income be taxed. I was pointing out that your statement: "for a C corp each dollar of income is already taxed at the corp level", is flatly untrue. A lot of large corporations get their net income down to zero or next to zero, deliberately pushing their business strategies to bolster their stock price rather than net revenue. In those cases, capital gains tax is the only tax paid on their activities, and the advantage of capital gains tax rates vs ordinary income rates is by no means collapsed.