Immigration and economic opportunity are two sides of the same coin, politically. This link gets stronger the worse the economic conditions are. When you have a sclerotic democratic socialist system like in most of Europe and then add a technocratic bureaucracy on top of it you have a powder keg of political revolt.
And once the bond vigilantes call Mario Draghi’s bluff, which could be as soon as Monday, many, if not all, of these fictions will be revealed overnight. At that point Salvini and Di Maio better be ready to move quickly from studying their parallel currency to printing it.