I agree that marketing is not a zero sum game, but I mostly disagree with your first paragraph above, at least as it happens in the US.
You're probably aware of the egregious cases of Daraprim[0], Acthar[1] (there are at least 5 cases from the last 10 years that I've read about, these two come to mind). They are only unique in the sense that there was no "slow boiling process", but rather an immediate extreme hike. Many other out-of-patent medicines experienced slower but significant hikes, such as the Epipen[2] are happening all over the place.
You should also read the Epipen article paragraph about the public-facing marketing, which is deceiving and life endangering, and about the policy-facing marketing, which is also not in any way compatible with your description.
It is my impression that your first paragraph is fantasy.
[0] https://www.washingtonpost.com/news/wonk/wp/2017/08/01/what-...
[1] http://www.nytimes.com/2012/12/30/business/questcor-finds-pr...
[2] https://www.nytimes.com/2017/06/04/business/angry-about-epip...