What if social media services started offering different versions of reality depending on your political position? So you would pick a faction and you would not

What if social media services started offering different versions of reality depending on your political position? So you would pick a faction and you would not see the same suggestions and have completely different search results from if you were in the other faction. Instead of pointlessly sending traffic to outside websites, you could just offer completely fictional news articles geared towards whichever faction you were a part of. Granted, this isn't that different from the situation that exists now but why not just take it all the way? If anything, the news would become more compelling and competitive vis-a-vis other more imaginative content without the need for any grounding whatsoever in fact.