Global cities and networking

While on the fast track, globalization has a long way to go. And many of its question marks involve cities in places like China, India, Africa, former Soviet block, Latin America, etc., as these cities try to catch up with North America, western Europe, Japan, etc.

But catch up they will. And the global economy is being based on certain major cities plugged in with each other, networked so to speak.

Here's the question: When the network is relatively in place globally, do this list of global cities stay relatively static, unchanging, as the infrastructure that allowed them to become global is in place and the network has no desire to change the hubs that are firmly set for it to function?>