Earlier quoted context omitted.
Shared under NDA with business relationships is not “public” for the common use of the term. Although I agree with your sentiment, your statement isn’t really accurate. Otherwise I would be able to read Spotify users’ facebook DMs, and I can’t.
You’re kidding, right? If I send a “private” message, but everybody from law enforcement to my bank has access to it, it’s not private. It’s public knowledge as far as any background checks or loan applications are concerned. By contrast, if my bank worked out a deal with Bell where they get to record my all phone conversations they would still be committing a felony in almost all jurisdictions, NDA or not. That’s a…
You give permission for those and the data accessed is often not public. There are degrees of privacy - what you're trying to do make up your own definition of 'public' and then have message board fights about it. It's not really a sensible position, let alone interesting conversation.