I wouldn't say they have not managed to make money on anything except ads.
For example, you have to pay for Google Apps for business and they say they have more than 2M customers. At 50$ per year per users, that's not negligible.
For example, you have to pay for Google Apps for business and they say they have more than 2M customers. At 50$ per year per users, that's not negligible.
But what I meant to say is that they do have other sources of revenue outside of ads that are not negligible.