The two I was specifically thinking about are SuSE and Canonical. There's also Collabora and Nextcloud in the productivity systems space and plenty of others.
To expand on point 2, Europe is already home to two major competitors to Windows (one headquartered within the EU) as well as competitors in other fields, so they would also have an easier time (as a bloc) than many other places, who don't have local competitors I nearly as good a position.
I use almost exclusively FOSS and I have monthly/annual contributions set up for various projects.