Jeff, good discussion. I've lived and worked in Africa since being a Peace Corps volunteer in Cameroon in 2003. I've been involved in Africa's oil industry in Angola and Nigeria for the past 7 years.

As was made public in 2019, the Angolan soverign wealth fund was plundered by corruption. https://www.theafricareport.com/18754/angola-where-did-all-the-money-go-part-1-a-family-feast/

When the people put in charge of the nation's future are it's own worst enemy, it is hard to build something that lasts.