I have the same thought. It is more a matter of framing. A while ago some people accuse Google of unethically profiting because they are farming the link structure of the Internet, which is the labor of many people (is it Nicholas Carr?) I don't really buy this framing. But Google's accusation seems fall on a similar line of argument. You can also setup a "Google sting" to prove they are copying from the Internet. It is called "Google Bombing".

Bing will be at fault if they specifically target Google. But if you consider entering a keyword and then click a link is essentially targeting Google search, then it only expose another problem, that is Google's monopoly on the search market.