Windows 11 adoption to business customers is really bad. Most of the adoption to 11 has been from people purchasing new home computers and being stuck with 11 (I have two win 11 computers now).
Since the bulk of Microsoft's revenue comes from business customers, they have a huge impact on decisions.
At this point the only decision Microsoft can make is to write off win 11 as a failue. Resuming feature upgrades to win 10 makes business sense.