- Untreated mental health problems
- Disabilities that undermine or limit social success
- Economies with few opportunities for young people
- Over-abundance of pressure (disproportionately placed on men): for academic success and career success
- Horrible housing market (why work at a crappy job only to lose what few funds you have in rent for a tiny shared apartment? Can you blame these people for not moving out?)
- Chronic loneliness (again, worse for men)
Most hikikomoris are men and when you never leave the house there's no opportunities to meet people. If you want to have the biggest effect on these people’s lives don't focus on giving them money. Unironically get them partners. No troll, young people’s social skills have declined beyond recognition and IMO as tech people we are partly to blame for this.