There’s ridiculously little difference between Windows, OS X and GNOME nowadays. Once you realise that most of your Steam library works and you’ve hated Office for at least ten years anyway, that leaves browsers, which are exactly the same. Most users don’t want to fiddle with settings, installers and drivers, they’ll just accept what the machine comes out of the box with.
Do Labour even care that they’re this loathed by their own base? Seems not as they’re too absorbed doing their important work for nightmarish lobby groups.