> Airbus would have been a terrible idea: no one had built commercial airliners before, and only the US had the know-how.

That's just plain false, Airbus started as a cooperation between a lot of european aerospace companies, which had different a lot of know-how in different fields. For example Sud Aviation (later Aérospatiale, now Airbus) was the French part of the Concorde, they also had the Caravelle.

Plus there was a significant contribution from England - VC10, deHavilland Comet, etc.

England also made what I consider to be the prettiest bomber ever made - the Handley-Page Victor