Normally I would agree with everything you just said.
But for one thing.
that bias you speak of is from a knowledgeable and specifically educated standpoint ...of using alien OS's in compare.
Most windows users ..more than the half you mention..I am sure..will not abandon the platform.
We are talking about average run of the mill think for me please windows users..
and they will stay...change to a DaaS model of the same OS they have always used most of their lives...
is a small change ...
compared to learning and changing to a linux model and that has many scared / don't want to learn / couldn't be bothered / cannot do it ...
That there are even a viable options available.
Look at the other exemplary models tthat people cling to out of the same factors.
the iphone and android.
the majority will suck it up...and take it...and like it...
that I do foresee.