The full quote from the trial exhibit is:

> When talking about revenue, we could mostly ignore the demand side of the equation (users and queries) and only focus on supply side of advertisers, ad formats, and sales. Sure, we had to build the best product, made smart marketing/distribution investments to get our product everywhere, but we could essentially tear the economics textbook in half.

They explicitly mention "we had to build the best product", so I'm not sure where you're getting the "not any product attributes" bit from. (Your linked article is paywalled.)