It's not just the government. It's also the:
1. Expectations of citizens
2. Love of Complexity
3. Culture of respect
Expectations of citizens
In Nigeria and Ghana for instance, people EXPECT government officials to steal. One who doesn't would be a laughing stock. (No joke)
Love of COMPLEXITY
Rural dwellers prefer politicians who speak using big words that often make no sense. Here's an example Patrick Obahiagbon. (Unfortunately, his words make sense grammatically. However there are those that throw out meaningless words.)
https://www.youtube.com/watch?v=I1bt-GyxiYI
https://www.youtube.com/watch?v=kSddKH1ZO-U
https://www.youtube.com/watch?v=ozxY6V-vx-0
City dwellers are not exempt. Big sounding agendas like vision 20/20, revolutionary council... fool the populace. Moneies are spent but the people are left the same
The Culture
Many African countries have an undue, almost irrational culture of respect for elders. For instance, there are differences in verbs and adjectives used when speaking to someone older than yourself in Yoruba language. Ghana and Nigeria frown upon the use of left hand for waving, writing, handshake, eating, even raising of hand for answering a question.
Many have active traditional rulers and kings. Elders typically should not be questioned, at least not without going the roundabout way of hinting and finally acquiescing to the the choice of the leader.
This respect for authority extends to the University - which should be a place for questioning of ideas. I've got lots of painful memories as someone who prefers practicality over tradition.
Here's a well documented example of the effect of cultural deference to authorities http://blogs.wsj.com/middleseat/2008/12/04/malcolm-gladwell-...