The web and partisan cable news channels have long since done away with that commonality. It's dead, buried, and cold in the ground. That's why it feels like one side of the political spectrum is living in the world of Fox News, Newsmax, OANN, and so on, while the other side is living in the world of CNN, MSNBC, Huffington, Vox, and so on.
There are some very good attempts [0] to make media bias more visible, but people who have already decided that Fox and Newsmax are centrist and OANN is right-leaning are not going to evaluate things fairly anymore.
If you ever had a friend growing up whose family was devoutly religious, you might have seen something similar: They run in totally different circles, all their friends are from their church, they take their kids to totally different movies, listen to totally different music. Can't talk sports with them because they literally can't name a football team. No culture overlap at all. Totally siloed off in their own world. That's what's happening with all this personalization and alternative news sources now, but instead of a small group of very religious people, it's 30-40% of the country!
The Adfontes Media Bias chart uses a two-axis system, plotting accuracy against bias, and inevitably ending up with most sources on an inverted-V shape: https://adfontesmedia.com
Unfortunately, Pew's list is not consistently updated like the Adfontes chart and other media-bias checking sites.
[0]: https://adfontesmedia.com/interactive-media-bias-chart/
The tragedy of the commons is that nobody cares about the maintenance of the common good: I posit that the common good ought to include shared myths. Historically, this meant shared worldview and religion. Today, we are challenged to find other bases for trust in one another.
In an ideal world news organizations would just provide both sides of a side, but unfortunately in todays world news agencies seem incredibly polarized and twist stories to suite their agendas. This now makes personalized news feeds even more scary and further contributes to the kind of polarization we see happening now. People seem more divided then ever in the last 20-30 years.
Personalized news feed are making this worse, but it's not a new thing.
Personalized news feeds destroy that commonality. Undoubtedly, those limited options were (and are) biased, and more solid information is available today. But that commonality had a value independent of conveying information.
Aside from all of that, I don't want news sources trying to predict what I want to read, because a major aspect of my news reading is looking at how various sources are spinning things. I read a lot of material I disagree with. "Services" that try to guess how I prefer to be gaslit are counterproductive.