The FCC exists (in part) to enforce a certain morality on public broadcasters. Whatever we think about that today, that was a core responsibility of the FCC when it started and that still exists today.
problem is who gets to decide that both sides are bing presented fairly? do you think that Fox Newsmax and OAN are going to be under the same pressure to give the liberal viewpoint as MSNBC and CNN will to show a righting viewpoint?