Interesting video.
While knowledge transfer and capacity building is always good, how well does it translate into wealth? Infrastructure and manufacturing is definitely the way forward to spur growth. Africa does have a lot of untapped potential, including a very young, vibrant, and increasingly educated population. However these metrics are only being exploited by foreigners - like the Japanese entrepreneur in this video. While there is a lot of skills-transfer going on, you can bet he targeted these IT professionals because he can pay them a fraction of what an equally skilled professional would be paid in Japan.
If I were leading any technology ministry in an African country, I am incentvizing big tech companies and manufacturers to invest in my country. I'm giving them 10-year tax holidays as well and pushing for mandates that require a minimum of 60% of the workforce is filled by locals. That way you ensure employment for your people, and the foreign workforce is also taxed in country. The companies wouldn't mind because they are getting a decade long tax holiday. You are ensuring continued development in your communities for years to come.