Remember DR DOS? Word Perfect...?
I recall asking on this very forum, a couple of years back: Why would anyone migrate a working VM to Hyper-V?
In keeping with a long history of motivating migration to their own products by creating pain for customers of other vendors through subtle - or sometimes blatant - forms of sabotage, it looks as if Microsoft have devised a reason for people to migrate their VMs to Hyper-V.
It astonishes me that people tolerate this kind of thing, and have done for decades.