If you’re gonna come on here and make a crazy insinuation like that you better actually have some educational foundation. Do you know anything about the history of West Africa? Ever read a single book about it or watched a documentary?
I actually think that it is culture. Often people attribute to melanin what is very obviously an issue with values and cosmovision, as part of the culture that someone breathes since childbirth. Which is solvable with education but only on generational timescales, unfortunately. Similar to Planck's principle, "Science progresses one funeral at a time".
https://www.visualcapitalist.com/2000-years-economic-history...
So why wouldn't India be able to reproduce China's success? Maybe not in the next 20-30 years, but it sure isn't a foregone conclusion that India will always remain poor.