I don't know if you were being facetious but I think he meant the search engine. Forget the search engine, how about their flavor of Linux that they made all their tens of billions off of? Nope, that's closed too and the improvements aren't available to Linux developers.

If Linux were licensed under the Affero GPL instead of theplain GPL, Google would be infringing.

> that's closed too and the improvements aren't available to Linux developers.

Are you sure those are improvements most people would want to have? Google has a remarkably narrow set of requirements for their servers and it seems more likely than not that if they made changes to their kernels, they would not be regarded as improvements by anyone with slightly different hardware.

> the one thing that brings them money

> their dominant source of income.

That's advertising.

(I admit to being slightly facetious, though).