Breaking Down Google’s 2011 Revenues

This infographic shows that almost every industry could have something to gain from pay per click. Larger companies clearly have a strong incentive to brand themselves with PPC because they can easily reach a national or even global audience by targeting keywords that directly relate to their business.
What this infographic does not depict however, is that high margin and high customer value businesses such as doctors, lawyers, and dentists can have a lot to gain from pay per click. If your customer value is worth thousands of dollars than you should absolutely be investing in pay per click if you can afford to do so.