I think it's counter-intuitive but in a high trust society you don't have a need to build these networks. In a low-trust society (like India) you have to build trust networks. These trust networks are _much_ tighter, though, than the usual interactions in a high-trust environment out of necessity in participating in a low-trust environment.

When you take these trust networks over to a high-trust society, they just act as additional leverage in your life.

I know Indian guys who lent each other large five figure sums to help business deals go along and, the most surprising to me, had one take on a mortgage for another in Menlo Park! (The family it was for was a dual income software engineer family, just missing a credit history and starting capital).