Vendor lock-in. If the PP spent some good money for a Windows only software very specific to his job, then there's no chance to migrate: that would simply be to

Vendor lock-in. If the PP spent some good money for a Windows only software very specific to his job, then there's no chance to migrate: that would simply be too costly. In due time, maybe, should exist a Linux port/equivalent, the user should carefully weight the costs/benefits of say a FOSS solution that would cost zero, but would have no warranty and be community supported. (Actually isn't that extreme: support can be bought for Linux software as well) It all boils down to what the user needs from Windows; migrating to a Linux machine plus Libreoffice for document work is one thing, moving complex vertical solutions to it is a whole different story. BTW, I'm totally in favor of ditching windows for good, but 30 years of technical and cultural lock-in are hard to fight.