More important, why can't the Cameroonian people seem to do anything about it? Couldn't Cameroonian communities improve their schools? Wouldn't the benefits easily outweigh the costs? Couldn't Cameroonian businessmen build factories, license technology, seek foreign partners, and make a fortune?

Evidently not. Mancur Olson showed that kleptocracy at the top stunts the growth of poor countries. Having a thief for president doesn't necessarily spell doom; the president might prefer to boost the economy and then take a slice of a bigger pie. But in general, looting will be widespread either because the dictator is not confident of his tenure or because he needs to allow others to steal in order to keep their support.

The rot starts with government, but it afflicts the entire society. There's no point investing in a business because the government will not protect you against thieves. (So you might as well become a thief yourself.) There's no point in paying your phone bill because no court can make you pay. (So there's no point being a phone company.) There's no point setting up an import business because the customs officers will be the ones to benefit. (So the customs office is underfunded and looks even harder for bribes.) There's no point getting an education because jobs are not handed out on merit. (And in any case, you can't borrow money for school fees because the bank can't collect on the loan.)