Sure, but most (if not all?) of us have language in our customer agreements that Microsoft doesn't have rights to just start browsing our OneDrive libraries and Exchange inboxes without a support contract explicitly authorizing access for support purposes. Just like, sure, I technically have access to a bunch of PHI at my workplace - but touching it without a valid reason is a one-way ticket to the unemployment line.

But unlike Microsoft's other services, AI needs data to train on - are they going to be content just sourcing this from the internet at large or have we finally hit an inflection point where they try to get business and enterprise customers to give access in exchange for these features? That's a big no-no to anyone in a field that deals with sensitive information, and in most all cases an equally big no-no to anyone in a company that wants to keep things confidential.