Not surprising
Microsoft is shifting to the Adobe and Office 365 model for all of its products. Why pay fees to get companies to sell perpetual licenses, when you force all your customers to just pay you monthly forever to use the software? I don't see perpetual licenses being available much longer -- Microsoft's official policy so far is that there will not be a Windows 11, for example. They used Office 365 to start gaining the acceptance, next will be client OS, and finally the server and applications.
The next huge shift will be the Oracles, CAs and SAPs of the world shifting to this model. There are companies out there that do nothing but resell licenses and attempt to clarify the licensing mess that is enterprise software.