The Fairness Doctrine was only for broadcast TV under the theory that the people owned the airwaves. Also this is not 1980. Anyone can get worldwide distribution of their ideas out.
The "problem" is that everything is vying for our attention because the internet made it vastly cheaper for any random joe blow to force a set of pixels in front of our faces.
That's the distinction. If I can't ignore it, then it shouldn't be legal. Companies should have no right to my attention.