Before 1988 in the U.S. we had "equal time" laws that required that broadcast media present both sides of political debates with "equal time" for each side. That's because for decades there were three sources of content: ABC, CBS, and NBC. Then cable and alternative radio ended that oligopoly for a while and those laws were removed.
Now we have just a few mass media content producers and a few mass social media outlets. The situation is beginning to resemble that which existed for decades, from the 20s to the 80s, in broadcast media.
