https://www.cnet.com/news/disney-plus-will-allow-downloads-for-offline-viewing/

The ability to download for offline viewing may be particularly meaningful for a segment of prospective customers: parents. Disney Plus is being pitched as a hub for family-friendly entertainment. But it could put pressure on Disney's business selling owned home-viewing formats like DVDs, Blu-rays and downloads purchased through stores like iTunes. 

With Disney's animated movies and Pixar flicks destined to live on Disney Plus, people with kids are going to be weighing whether they should buy a copy of Frozen II or Toy Story 4, or instead just sign up for Disney Plus and get everything else with it.