It is undeniable that corporate Linux has prefered GNOME over Plasma, I can't name you a single relevant European distro that uses Plasma as its default. - Can

It is undeniable that corporate Linux has prefered GNOME over Plasma, I can't name you a single relevant European distro that uses Plasma as its default. - Canonical (United Kingdom) ships GNOME for Ubuntu. - SUSE (Germany) ships GNOME as default on their SUSE Enterprise Linux, openSUSE hsa no defaults. - Manjaro (Austria, France, Germany according to DistroWatch) ships XFCE (GTK based) by default. - Mint (Ireland) ships 3 GTK desktops, defaulting to Cinnamon. Meanwhile, on America: - Valve (USA) ships Plasma on SteamOS for their desktop experience. - System76 (USA) ships (although they hate it) GNOME for PopOS. They want to replace it with a Rust-based, GTK/Qt-free alternative. - Red Hat (USA) ships GNOME as their official desktop for RHEL. - Fedora (USA) ships GNOME as their official desktop. So I don't think country impacts much, it is just that GTK is the de facto toolkit for Linux and historically, Qt wasn't FOSS and GNOME received a lot of development for accessibility during Sun's days, which matters a lot for corporate due to stricter requirements on that front.