With European nations switching to Linux, do you think professonal software companies will follow

I doubt European governments migrating to Linux would sway the development plans of software companies like Adobe, but governments buy a lot of software licenses for company like Esri, Autodesk, and Bentley. Not to mention accounting software, and plenty of other commonly used business utilities.

But, even if governments themselves aren't big enough to push companies to start porting to Linux, the governments will have to have clauses in their various contracts that contractors and consultants will have to use software that is compatible with the government's systems. If a nation's government migrates to Linux, that will be a big driver to push many private companies in that nation to also need to migrate, or at least maintain compatibility.

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