Germany: functionally paralyzed government that has the far right knocking at the door because the fractured coalition of left-centerleft-centerright continues to refuse to do what voters ask for.
Italy: Nominally center-right government, similar problems as Germany, less the energy issues
Japan: just elected a landslide right wing government that is going to change the constitution so they can build an offensive military again
Curious.
I don't perceive those problems to be inherent to the territories or peoples of the countries. All have had potential to change and have done so extensively since the Second World War. There isn't a universal explanation or root behind the issues these countries are facing today, unless you are willing to abstract it to just "economics".