I would say the main reason here is the low proportion of black players. If you look at statistics from the 20th century, you will find very little top players from Asia. But as chess became more popular in countries like China, now there are plenty of Asian super GMs.

I guess same thing happens to still underrepresented races

I would say the main reason here is the low proportion of black players. If you look at statistics from the 20th century, you will find very few top players from Asia. But as chess became more popular in countries like China, now there are plenty of Asian super GMs.

I guess something similar will happen to still underrepresented races