One institution not mention (and given the publication, I find it a bit odd) is the local churches. It is one of the large connection points that have started to fade. The amount of social welfare the churches supported has not been replaced.
This is something that needs to be addressed. We are becoming more secular over time, but we aren't replacing the communities that churches create with secular equivalents, at least not on the same scale. Feeling connected is important, we really need to work on that.
That could be a model.