This is a good piece: How to redesign cities to fight loneliness.
It talks about how cities and services can be changed to fight loneliness. This is good. The flipside of it, though, is that cities are designed and have evolved to promote loneliness. One of the reasons people come to cities is to get away from things. The cost of that is often loneliness.
Cities are not the only contributor. Digital technology also can contribute to loneliness. But like cities, digital technology can also help to assist those struggling with being alone.
The bigger problem is loneliness in general. Cities and digital technologies can help there. But there are bigger social and cultural issues in the mix, and those need to be addressed as well.