[jcl]

On the other hand, they effectively pay Mozilla to make Google search the Firefox default homepage. They also distribute a free mobile phone operating system that is heavily integrated with Google services. And they make a web browser (advertised on the main Google page of other web browsers) that incorporates features important to widespread adoption of Google applications (Gears, high performance layout and Javascript engines, robust process model).

[raganwald]

Paying Mozilla to be the default search engine is merely using money from a successful business to promote the same successful business.

They also distribute a free mobile phone operating system that is heavily integrated with Google services.

You might have something there, that is very similar to some of the things Microsoft and Apple both do.