Very interesting video. I think it comes down to high trust and low corruption. It’s amazing to me that Africans haven’t constructed any major infrastructure projects since colonialism.
A lot of it has to do with geography but that can the only reason.
Check out Hidden Repression by Alex Gladstein. It’s a pretty concise explanation of how predatory lending by the IMF has consistently kept extremely corrupt dictators in charge of a large swath of the continent. Confessions of an Economic Hitman is also a good, easy intro into this.