https://www.politico.com/news/magazine/2023/04/24/tucker-carlson-departure-fox-news-00093559

A somewhat similar viewpoint:

«“A weighing of the negatives – and risks to the business – versus the positives or benefits.”

And if you’re the Murdochs, it is easy to say how holding on to Carlson comes with more much more risk than reward. Carlson is not a team player, and in fact is uncontrollable. He carries legal baggage, and the Murdochs are trying to put an end to the legal disputes they find themselves in. He regularly births negative news cycles about the network that tarnish the brand, and Fox News is desperate to emerge from the cloud of negative press it has been the subject of. Meanwhile, mainstream advertisers have stayed far away from Carlson’s show, which is far too toxic to associate with.»

https://www.cnn.com/2023/04/25/media/fox-news-tucker-carlson-reliable-sources/index.html