Companies try to control the narrative just like any one person tries to control the narrative in their lives, i.e. everyone does this. This whole argument makes no sense.
We're not really talking about controlling the narrative. We are talking about controlling the consumption rate (and the ability to set the focus). If I am visiting a web site, some parts are more interesting and some less; I want to spend time on the stuff I care about. If I am giving a presentation, I also want to control how the material is presented. This is nothing about "narratives".
Presenter has control: objrctive is to control the narrative, build to a conclusion, resonate. Slides tell stories and "make a case."
User has control: find what's relevant to them, get out. Documents are organized for search and discovery.