Race. Gender.
I see this pattern where you define a class so broad any proposition becomes a truism, and productive discussion becomes impossible.
The media have started to act in the best interest of their clan vs society as a whole. The Media has fragmented and serves their niches but not society as a whole.
So talking about the media as a whole is possible without having to identify tribes within.
I'm not saying you are not making a point - it's just a unnecessarily broad point that is difficult to discuss constructively.
Also, the media does not exist outside of society. The media sucks because our culture in general sucks.
Same thing with politicians. We don't get shitty politicians out of nowhere. They come from the people, they optimize for what people want, and people vote for them.
It can be tempting for others to try to call this an example of the Prisoner's Dillema, but the Prisoner's Dillema doesn't apply because there isn't even a marginal upside to "defecting" when your counterpart "defects". We're personally better off when we choose to not participate in this stuff, regardless of what other people do, and we're all more better off as more people choose to not participate.