Now, by the time of the information age, we have seen a shift in population to the outskirts of cities. It provides us with even greater mobility, in that we need not even get up to go shopping. It seems this would further diverge the idea of the city. Places of work are also becoming more wired , giving people the opportunity to telecommute . Banks, Insurance Companies, and other institutions that once created the towers of downtown cores now can discard the overhead of these buildings, and create a workforce working from home or regional offices.
Decentralization is the idea of the present and the future.
International borders are irrelevant in this regard as well. You need not live in the city you work in, as an electronic link will now take you anywhere. The future will see the war between the city of bits and the city of atoms. Architects will be on the armies of both sides, making it a battle of great interest. Not only can you interact with others, you are anonymous, and can change your entire identity.