It would not have been the end of the world if I had kept both OSes on the
same machine using a dual boot and reboot each time I wanted to
switch--inconvenient, but not a hardship.
That is it. It is less convenient. It is the next step in the transition:
first use more and more free software on the proprietary operating system,
then dual-boot, then get rid of the filthy operating system. Free software on
proprietary operating systems makes the transition smoother, hence more
likely to succeed.
This must clearly benefit MS somehow. How does this clearly benefit MS?
It is possible that there is an evil hidden plan behind all that. But I do
not see it. It may simply be that MS makes a strategical mistake that
benefits the free software movement.