Yes you're right about rural Africa. They rarely even have electricity and running water let alone wifi. Also those who are living in rural Africa are most likely farmers who take great pride in what they produce and rely heavily on the yields. They can also be stubborn to realize change. I met a young man who built a school for the youth of a small village. Yet the families there were against it at first because they viewed education as pointless, that their children will just take over the farms when they pass on so they'd be wasting their time in school.
Absolutely it will take lots of time and a big company willing to invest in that market. They might be apprehensive but yet again in my experience with speaking with a few locals from cities they were all quite open to the concept. I bet once they see how it can work it'll help solidify the success there.
Farmers and fishermen need to be stubborn to survive.
Spend some time with them sharing their work and you can not help but respect this as a virtue.
Plus the last thing, people with a low self-esteem can cope with are some know-it-all-kids, who then dissappear to the city with some more or less good job.
Understandable. In a way. And tragic.