I would argue its gross inequality more so than those technologies.
In other countries with less economic inequality I believe studies show more happiness and social cohesion.
In other countries with less economic inequality I believe studies show more happiness and social cohesion.
Nevertheless, If inequality is a major cause of this kind of alienation, it's a particular kind of inequality. Specifically people living in competition, and confronted by the impact of competition in close proximity. Some desperately unequal societies in South East Asia don't seem to have the same level of social dysfunction, while Japan which is relatively flat has enormous amounts of alienation, mental health issues, relationship decline, and of course suicide.