The fundamental challenge in search is that you have two limited resources: display place and user attention span. Google won vs other search engines because they were better at figuring out what users were looking for and putting it higher in the listings.
Anyone arguing the reverse - that Google is driving opinion, not the other way around - is saying that they're massively sabotaging their core feature yet no competitor has been able to exploit this.
Fox News obviously has a large TV audience, but I'd be curious how that demographic maps to google usage. And it's worth remembering that it's not a "fox news vs cnn" comparison vs a "fox news vs the sum of the less-right-wing channels" comparison.
Every major platform is struggling with this.
Isn't this what has always happened historically with any new media platform, from print to radio to online? Storage space got cheaper, but human attention remains limited, so popularity and feedback loops are a human problem, not a technical one.