Google knows its bread and butter is legitimate results
Google's bread and butter is controlling the stream of data so that people accept its results are legitimate. That's not quite the same thing. Essentially Google does well when people trust Google implicitly and don't question whether or not its results are actually good. For a very long time Google returned W3Schools as the top result for most HTML and CSS queries. These days MDN is top and W3Schools is second. W3Schools is not the second most relevant link for a search of a CSS property name or an HTML tag. I do wonder if they're second because they display a prominent Google AdSense ad at the top of every page.
The main thing about Google Search results is that they're much better than their competition. That's all you can really say for them though. The results aren't anywhere near as good as they were 15 years ago, where a query genuinely returned the best, most relevant results. You could predict which site would be top for a query domain you knew well. Google are still dining out on that reputation but they don't really deserve it any more.
Google's bread and butter is controlling the stream of data so that people accept its results are legitimate. That's not quite the same thing. Essentially Google does well when people trust Google implicitly and don't question whether or not its results are actually good. For a very long time Google returned W3Schools as the top result for most HTML and CSS queries. These days MDN is top and W3Schools is second. W3Schools is not the second most relevant link for a search of a CSS property name or an HTML tag. I do wonder if they're second because they display a prominent Google AdSense ad at the top of every page.
The main thing about Google Search results is that they're much better than their competition. That's all you can really say for them though. The results aren't anywhere near as good as they were 15 years ago, where a query genuinely returned the best, most relevant results. You could predict which site would be top for a query domain you knew well. Google are still dining out on that reputation but they don't really deserve it any more.