Look at Daimler Benz. Companies are contracting out for many services, reducing core employment. State industries face an identity crisis. Watch Air France wrestling with this. Sub-national centres of particular excellence can still thrive.
Silicon Valley is another famous one.
The City of London is clearly one. Such communities are a particular feature of Italian industry. The US has its strategic service industries in private hands and has a labour market in which the obligations of an employer are relatively slight. It has created 26 per cent more jobs since 1980, mainly in business. The EU has created 8 per cent more jobs, mainly in the public sector.