Exactly what African teams are performing well? I have been hearing that "African national teams will dominate the football world" since the '90s and nothing ever happened.
It will not happen because the infrastructures for football didn't change since they took independence and maybe even worse in some African nations.
Talking about Asia the only great teams are Japan and South Korea (and maybe Iran), for all the others is valid the same thing I was saying about the African teams: one edition they could be great, then they miss the next one.
That was very accurate for the African teams especially Nigeria, Senegal and Cameroon. They have good players in Europe that selected their national team to represent, they have good qualities when they play in CAF and at the early stage of the World Cup but once they advance, they just fail badly and can't resist. I say, they are playing good for once or twice at best then failure for a decade before getting on feet again.
Probably, especially with the African teams, it has to do with the lack of federal organization and, unfortunately, corruption. Many of the countries I mentioned have a big football culture, kids love playing football, but there is a lack of infrastructures. It's a real pity because many African players are very generous with their communities, I can mention Kanté and Mané for example, thanks to their donations their villages have new schools, hospitals, clean water, etc etc, and there are many other like them. I really miss seeing teams like Nigeria and Senegal succeeding and it's even more sad to see how the growth really stopped.