That’s quite by design, some believe. Same with how development loans work - they basically mean that the country has to export a large proportion of the their output (to get the foreign currency required to pay back the loan - foreign denominated debt really is a poisoned chalice for any country). So they encourage development of resource extraction and farming of crops valuable for export (fruit, etc. but generally not good staples because of the huge amount of subsidised US product on the market). So they eventually dependant on importing staples, which makes the US very influential (sanctions, for example are much more effective if a country can’t feed itself).