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I think there was always a similarity or homology between DRM and many privacy scenarios that people care about:

Party A sends information to party B intended for use in a specific context, but wants to limit the risk of it being stored or forwarded for use by other parties or in other contexts.

DRM typically connotes that party A is a media company and the information is a movie or something, but - as in the case the article is about - party A could also just be a regular person and the information could be private personal info.