If I was an antitrust regulator worried about Disney's dominance, I would just make them sell star wars and/or avatar so they don't own three sci-fi mega franch

If I was an antitrust regulator worried about Disney's dominance, I would just make them sell star wars and/or avatar so they don't own three sci-fi mega franchises. I'd also consider Pixar and Hulu. Why do things to Amazon in service of sapping Disney's power?