Kenya like African countries have a thriving informal economy where incomes are not documented. In the US informal economy is tiny, but still structured in a way that banks and Govt can reach folks. Kenya informal economy need to be policed ie contracts, loans be given to chiefs, subchiefs to be collecting default loans/debt. You jail defulters and people will stop borrowing, but if they do, they will move heaven, earth, and hell to pay obligations. You cannot borrow loan in the US and ran away with it, it will catch up with you either way. If lender go to court, you will be auctioned and you will be homeless, carless, and if your work place finds out you don't pay obligations, they fire you after garnishing wages. US debt/loans is simply militarized in a soft way by sherriffs and courts!