It's not Africans, it's just people. Westerners sell each other out to foreigners too. Just look at the history of Latin America. There are just far fewer foreigners with the relative wealth to buy off whole governments in MDCs. And in many cases our institutions developed to resist corruption before international finance made it so incredibly easy to accomplish.

The intentional abuses of colonization were vile, but the neglectful exploitation of decolonization has hardly been better.