Quoting runway numbers does not tell the whole story.
Schipol has six, with three parallel and into the prevailing weather. It has two crossing runways and one inter-connect. The max number of runways at any one time is three. It is effectively the only major airport in a country the size of East Anglia and the S.E..
Orly has there runways but one is a crossing runway so the max in use at any one time is two.
CDG is a special configuration. It has two pairs of runways with each pair having one take-off and one landing runway. It is more efficient, slot wise, but they can only be compressed so much because of separation rules.
However, take Germany as an alternative. Last time I looked it was a thriving economy. Its main airports by passenger numbers are Frankfurt, Munich, Dusseldorf, Berlin Tegel, Hamburg and Berlin Schoenfeld.
Frankfurt has four runways with three parallel and one crossing. It is a sort of CDG halfway house with one take-off and landing runway. One landings only and one take-offs only. Munich, Dusseldorf, Berlin Tegel each have two parallel runways with Hamburg and Schoenfeld being of an 'A' frame design.
Germany does OK without putting all its eggs in a "Hellthrow" basket.