[p0wn]

I think you're confusing an ad agency with what I'll refer to as an ad service.

An ad agency works with companies to produce ads. It does the concepting and production of ads(etc.).

An 'ad service'(unsure of proper name) provides the medium of which to display the ads. These include tv stations, google, youtube(owned by google), facebook, amazon, all those annoying ones in free mobile games etc.

There's a huge difference to what wpp and google provides. Google earns 90% of it's revenue(source: https://www.investopedia.com/articles/investing/020515/busin... - i googled it) from ads.

That said I agree that just because google provides a platform for ads doesn't mean it's "dna" is based in advertising. It's a core component of the company, though, and drives everything else the company does.