I agree, and I often wonder why companies pay any tax at all, rather than just hitting the shareholders as their wealth grows. There was a post a few months ago about taxing unrealized gains that was very interesting I thought.

The company itself has an impact on our society and needs to be "governed", so it seems reasonable for them to pay for that governance. Actually, it seems unfair that you can claim no profit and get out of paying for that governance.

I'd be really interested to know if companies pay the true cost of their impact to society, or if individual income tax has to pick up the tab.

Companies do generally act as tax collectors rather than the final bearers of the cost, as taxes just increase the price for the end consumer.