Japan is, however, unique simply in being at least 10 years ahead on the demographic curve compared to any other aging country, so they're a crystal ball of whe

Japan is, however, unique simply in being at least 10 years ahead on the demographic curve compared to any other aging country, so they're a crystal ball of where we're all going. Also, it's not meaningful to say "France is doing worse except for the immigrants", because the immigrants are there for good and they're having children, taking jobs, paying taxes, etc, which changes the equation for everybody else as well.