How common is actual three phase charging in Europe? Most larger buildings in the US (condominium complexes, commercial buildings, and things like supercharger

How common is actual three phase charging in Europe? Most larger buildings in the US (condominium complexes, commercial buildings, and things like supercharger stations) have three-phase supply. But most non-huge loads get only one or two of the phases, presumably because the benefit of wiring up all three is pretty small compared to the added expense of installing an extra wire and keeping track of which phase is which.