Summary: The EPO is (and has been over the past decade or more) run by a bunch of drunkards; Worst of all, António Campinos has absolutely no oversight at the EPO; the tail wags the dog...
Because digital connections in third parties aren't assets; they endow another party with tremendous power over people (e.g. MElon getting to decide who can and cannot reach people or what messages to "dim down")
Narrowing down to desktops and laptops, and judging by Web requests that go through Clownflare, many people there use GNU/Linux or Google's 'bastardised' version of it (with spyware preloaded)
From what we can gather, the tram ticketing system does not use Windows; we never saw it crashing or rebooting (or showing some Windows logo) in decades, so we assume it runs some kind of Linux