>Naturally GNU/Linux distros (including Trisquel) can do the same job as
Windows - run proprietary software - so I don't think that's the issue.
One cannot build a free software operating system that would disallow running
proprietary software per definition, see freedom 0. Yet, the purpose of most
GNU/Linux distros (especially Trisquel) is certainly not to run proprietary
software, which 99,99% of windows software happens to be. That's why it is
the issue.
>On the other hand, I recall seeing at least one free Windows-compatible
program that was apparently developed and tested using only free software
(the website mentioned the program being tested only on ReactOS), so I think
it has potential to be useful for the free software community.
If a piece software is free, it can be ported to any operating system. No
need to use emulators to run foreign binaries.