You're being too logical and rational.
Any organization reflects the guy at the top. In the case of CNN, it's Jeff Zucker. He is the face of CNN management.
Now pause for a moment to let that sink in and then read your comment again. You will see the folly in assuming that CNN management will do anything about Jim Acosta because his bosses agree with his behavior.
Acosta is just doing Zucker's bidding.
LOL, I get accused of that a lot. I will have to work on that. Sorry.