From what I've seen living a privileged community in a not so privileged country, its that culture tends to impact in a much higher degree than money or privilege. Yes, money can buy you the privilege of skipping those awkward interactions that make us human, but it is up to the person to actually want to use money with that purpose.

I know very wealthy people that keep very closed ties to their families and friends. It's true that finding real friends gets harder, but the isolation tends to be caused by a deeper cultural norm.

E.g. in Latin America the family is given a much higher importance than in the States or Europe. It is not rare to see young adults living with their parents even if they can easily afford a place of their own. Even those that live on their own tend to meet their families in a regular basis.

In the end it's all about prioritizing what is important in your life and in every society there seems to be a common list shared by it's inhabitants, if you end up in a place that values more independence than relations, maybe its time to start swimming against the current in that regard.