I think I differ slightly on this stand. Africa might be a bit backwards in terms of the literacy levels, but it's still not left far behind in terms of technology and advancements. There seems to be a lot of focus on the cryptocurrencies which are the offshoots of the blockchain technology, this governments of these African countries and other developed countries for that matter are against.
As far as I know, the population of the african continent is growing very rapidly. In 10 years a lot of people will live in Africa. Yes, the overall level of literacy is low, but the active and rich highly educated individuals can invest in the crypto exchange markets enough their capitals, so I do not consider this factor an obstacle.
By the way, in some african countries people can buy crypto currencies in order to preserve their money from the hyper inflation of local fiat currencies.
I pay attention to towns and cities in these countries. For example, South Africa currently seems to be a country with an attractive investment climate.
Level of literacy is not that low actually which is basically only high or on the median level among the older generation but for some research conducted recently by World bank, level of literacy among the youths is increasing by the day and presently should be around 70%.
I know African continent is one place that would really require a lot before things would be out in place economically and every wise. I believe in the long run, as some of the old folks get to pass away, there should be some improvement. The truth is that, Africa would really have been a good case study for the adoption of cryptocurrency but we know there are technical limitations as well as governmental limitations as well.