That's exactly who they are targeting, and you can be assured that there are organizations who would be willing to pay for this. Your dentist will be more than happy to pay Microsoft $40/month to manage their desktops.
Once digital records became a thing, my dentists have all had one desktop per chair, plus one for reception, maybe one for a finance person (ugh, that's a sign), and the private office for the doctor. $40/month/each adds up pretty quick.
And this rental model also allows for hot desking by default.
A dentist looking X-rays in their comfortable office can use this system to bring their whole desktop state into the exam room with them to review with a patient without them having to do anything more than simply log in (just as they would do anywhere else).