"otherwise that secret data is already 'in the cloud'.
Al least with Microsoft's cloud you can control the data location and encrypt it with keys that only you have access to.
"How long before they would be forced to ditch the on-premise MS stuff and move to the cloud based offerings?""
As Office 2019 is already announced and will likely be supported for circa 10 years, not anytime soon unless they want to.
Biting the hand that feeds IT
