Even the city of Berlin is around 59% larger then the whole country of Luxembourg (the population of Luxembourg is also around 5times smaller). It's really not

Even the city of Berlin is around 59% larger then the whole country of Luxembourg (the population of Luxembourg is also around 5times smaller). It's really not hard for it to provide free public transportation. (Berlin considered doing it and it's a comparatively poor city). Generally in such small countries a lot of thing are just way easier to implement, through other things are way harder. Or in other words for many metrics comparing very small countries with non very small countries makes often no sense as the dynamics involved are just too different.