They did. The attempted takeover was smashed before it even got going.Disney have spent a lot money on buying up the competition and their now at a point where they have too much IP on their hands which they can't effectively monetise due to oversaturation yet the content they do put has been underwhelming to poor. Add in price gouging at it's theme parks, getting involved in a very public dispute with local politicians and a run of box office disasters like Lightyear, The Little Mermaid, Strange World and the recent instalment of Indiana Jones you have to wonder why shareholders haven't revolved and booted out Bob Iger (perhaps Indiana Jones and the Dial of Destiny will he straw that breaks to camels back).
They got the other Bob in as CEO and the first thing he said he wanted to make Disney less political. Couple weeks later Disney launched the famous video about supporting LGBQRSTPTQ5551 the teams call one. Then he was sacked a few months later. He was utterly powerless.
They made an attempt on the Board by trying to install shareholder reps onto it. It failed. The other Bob was their man.
They brought Iger back and he was the architect of this whole mess and the first thing he did was started to fire all his main opponents.
Other companies are trying to repair the damage they have caused but Disney is just that massive like you have pointed out that’s it’s a lot harder to cut out the rot.