Is retirement planning (Live "below your means" and put in 20-30% or more of your salary towards long term investments), and family support (you fund your kids education and parents post retirement needs, and your kids fund your post retirement needs and your grandkids education) such an alien concept for Americans? When you manage it internally, instead of paying interest to a bank, you just have lost opportunity costs of investment within the family.
AFAIK, most Asian countries do work this way. Given American salaries, this should be very easy to manage in US