[yuy910616]

A lot of hot air:

People move to these cities because of PR and marketing? It seems like it is the author who is divorced from reality. Is there study on marketing dollar to population growth? Do mega cluster exists because of superior marketing?

A more convincing argument would be that policy attracts talent and business, and locations with bad weather is more likely to have better policy.

That and serendipity - Michael Dell and William Shockley come to mind