Beyond the IT department everyone else has very to low incentives to adopt "those crazy ideas from computer guys", they care about deadlines, roadmaps, when marketing campaigns can be organised, with what content, what should be on the contracts with business partners,...
Ever since we got those ideas around 2000, the best outcome if agile is adopted at all, is scrumfall as the article describes.
However I have also seen many companies go back to classical requirements documents, and all related processes, as if agile had never been in the building.