I wouldn't say the existence of this page proves your prediction right (as it's not dethroning Google anytime soon).
It's easy to forget that the goal of Google isn't to provide a useful search engine (at least not anymore), but the search engine is a by product of them wanting to show ads.
The search engine and the ads are tightly coupled. A better search engine means it can predict with more accuracy what you are looking for and can serve you an even more targeted ad that increases the chance you'll click.
It's easy to forget that the goal of Google isn't to provide a useful search engine (at least not anymore), but the search engine is a by product of them wanting to show ads.