[santiagogo]

To some extent wealth and the comfort you can buy with it does reduce dependence on others and can help someone become isolated, since you don’t need help or favors and don’t need to engage in reciprocal social activities, since you can just pay for things. It doesn’t necessarily cause isolation, but it definitely helps someone who intentionally or unintentionally want to become socially isolated.

[badpun]

This. One trivial example - people used to cook their meals in my country, which meant that you sometimes found yourself lacking some basic ingredients (like flour, salt, sugar) and just borrowed them from a neighbor living on the same floor. Now, as people more people eat out or order, this has decreased significantly.

Another thing is children activity - when I was a child, all children from my area were playing together outside all day (weather and school permitting), which resulted in parents knowing each other via various everyday interactions. Now, when people can afford to pay for extracurricular activities for their children, they just chauffeur them to their various activities and there is no parent community where the children actually live.