There is just no alternative to Microsoft. Since they push everything into cloud MS gets centralised control. Cutting MS literally cuts the person off from anything digital.
There is some movement to reduce MS dependency in Europe, but it's not yet there. Until then, this will be a huge lever available to US.
I've written about this back in the day: https://blog.miloslavhomer.cz/microsoft-dependency-has-risks...
Discussion: https://news.ycombinator.com/item?id=44381358