Lots of railway equipment (vehicles, signalling systems) is designed and manufactured in Europe, and obviously the construction and maintenance staff have to be

Lots of railway equipment (vehicles, signalling systems) is designed and manufactured in Europe, and obviously the construction and maintenance staff have to be, so I don't see why this decision would have been done for Airbus. I think it's more likely to have been convenient for the politicians, who had incomes that fitted with taking weekend breaks to Paris or wherever, and good for their voters, on a holiday package to Greece.