Was Oprah losing viewers? Is that the real reason she left? How is her network doing?

You don't have to be in front of the cameras to run a network, you can do it just as easy to run it behind the cameras. She spent 25 years in front of the camera, she probably wants to experience what is like to be behind the camera. Everyone needs a change a pace, even Oprah, and it has nothing to do with ratings.