Well, there is a point to which they are keeping Africa poor. It doesn't need their help, but foreign aid, and corporate colonies in foreign countries ain't gonna help the situation. Then there's the whole "sponsoring terrorism for immediate political gain" thing.

Instead it's: "Oh goodness! We caused another regional conflict in this area! Better take your tax money and give it to temporarily aligned warlords, and then import a shit load of criminals and make you pay to house them! I'm the real hero."