Can they monitor for such a thing? Does say, Azure AD show whenever someone downloads data? Does Outlook make a similar call to figure out the name dropdowns?
Perhaps for small orgs. We’ve got thousands upon thousands of people so little chance of grabbing the entire AD or leveraging some outlook dropdown.
Is be surprised if any competently run large org allows that anyway. Just takes one rogue dude trying to make a quick buck by selling the info to spammers and you’re dealing with that for the next decade