So it's like a social security fund. 
They also expect more people will chip in and when it changes they ask government for help.
They also expect more people will chip in and when it changes they ask government for help. In the start, yes, it would expect more people will chip-in but when it reaches the threshold of Self-sustainability, it just makes money from the capital alone.
I don't think government can help us: biggest dept: https://learn.stashinvest.com/10-countries-with-largest-national-debt-to-gdp , lowest debt: https://www.statista.com/statistics/273488/countries-with-the-lowest-national-debt/ . You can tell me the story behind those numbers.