We have 12 public broadcasters that are independent of each other each with their own board (and on top working under the laws of different states ensuring that

We have 12 public broadcasters that are independent of each other each with their own board (and on top working under the laws of different states ensuring that no one political institution has power over all them, the federal government is strictly barred of interfering by the constitution). 10 of those cooperate closely, share some resources, and produce a common TV station in addition to their own radio and TV stations. One is a radio broadcaster using resources of the others. The last one is a TV broadcaster that works separately. It's pretty inefficient but ensures that there is no single entity controlling everything.