I think you are correct, worse is that IMO countries or regions reach a tipping point where even if things go well for a while and they receive investment it will always crumble from now on. There are just too many desperate people eating out of bins etc.
If you turn up there and open a shop, selling bread or mobiles or whatever. It will last about 2 minutes. Build a brand new medical centre, will be stripped of contents immediately. At a certain point it cannot be saved is what I think. Some regions in Africa have probably had billions pumped into them with no real long term benefit. Inflation, food, education, healthcare, water & natural disasters combined with pricing for production (Oil) decided elsewhere then they have a hard and possibly impossible road to travel. They need to control and invest in almost all of these things at the same time with no mistakes to get it working, not going to happen.