Just look at the data in Netcraft’s Web Server Survey of the top million active sites:
A least-squares fit to the data (y = 3025.4 -1.497 x) gives 2021 as the year share will be zero. Only a decade until M$ becomes irrelevant. All in for the cloud? I don’t think so. If M$ doesn’t pay thoughtful people to use M$’s stuff it doesn’t happen.