I'm surprised Nigerians have little disposable income, I constantly get emails from generous Nigerians who are soon to be inheritees of massive fortune for a small outlay on my part that will smooth their receipt of their estate.
I expect to be very rich soon.

Access to materials, and books in native language.
Disposable income to spend on chess. Computers and the internet are only just becoming popular there... etc. Whereas Europe and the rest of the world have had them for nearly 30 years.