I get that but excluding Active Directory for devices that are used for productivity would be a huge no go. If they are only used to connect to Virtual machines that would be an acceptable solution.
Hardly. Active Directory is only viable and dominant because it was created to manage Windows computers, a consequence of Microsoft's near-monopoly in desktop computing. Mobile computing is dominated by other players, who have a vested interest in delivering Active Directory-like solutions for their platforms. One reason Microsoft is as big as it is in cloud computing is their recognition that, going forward, they need a platform-independent source of revenue.
Desktop computing is not a growth market. Mobile devices cost less, and are the most practical solution for many kinds of workers.
Let's take restaurants as an example. The traditional, Microsoft/mainframe approach to computerized order processing is to have several transaction-entry stations distributed around the establishment. The servers take orders with paper and pencil, then go to the transaction-entry station to enter their orders, sometimes queuing up behind other servers. At the end of the meal each server returns to the order-entry station to adjust and generate the bill, brings that bill to the guest, awaits payment, and if a credit card transaction returns to the transaction-entry station to process the payment, then returns to the table with the payment slip for signature. If the customer adds a tip to the credit card slip, then it's back to the transaction-entry station to enter the tip.
Or, each server has a mobile device, and all transactions are entered and completed at table side. No transcription, no paper. The time saved going back and forth to the transaction entry station results in faster service (faster table turn-over = more guests served in the same amount of space) and/or may reduce the number of servers required. Cash control solutions can't be quite that decentralized, but cash transactions are a steadily declining portion of revenues. Does it make sense to send servers to the cash register for every transaction, if the vast majority of transactions don't involve cash?
The situation is similar in many other fields, including health care, retail sales, transportation, and delivery.
If someone told the big boss, "We can't make that change, because it's not compatible with Active Directory," they'd be skating on very thin career ice. A competent IT professional, when asked, "How can we be sure the system will be secure and that our employees aren't mis-using/stealing the equipment," will answer, "MDM."
If you hadn't noticed, Apple has established alliances with major providers of enterprise solutions, including IBM, Cisco, SAP, Accenture, GE, and Deloitte. Apparently, you believe that a computing device is only a "computer" if it is used in business. Case closed.
https://www.apple.com/business/
Now, perhaps you'd rather not see this happen - your career is invested in desktop computing, and growth prospects in "computing" (as anyone but you would define it) are limited on the desktop. Worse, mobile is stealing share from desktop, as well as opening up new avenues for deployment. If you'll be retiring in the next five years, you should be fine, but if you still have decades to go before retirement... don't bank your future on maintaining the status quo.