Even on the Codex I see a ton of people with the "Tolkien fantasy or GTFO" attitude. Drives me nuts.
Because RPGs needs to sell.
Creating African RPG for couple milions is like burning that in fire.
And then there are cultural differences.
That is why we have tolkien lorefication and white people medieval period.
Imo if anything i would love to see original ideas instead of historical RPG set in Africa with quest to became full owner of 5 cows.
Not sure why you think Africa is the big example. Roman or Greek Empire would probably be the obvious go-to ones, and last I checked that was European (or close enough). There are literally hundreds of great choices. How about a Deus Ex spy style action RPG set in the cold war or WW2? How about a base building tactical RPG like Dead State set in the wild west? I could go on for paragraphs here on this shit.
Also I'm not just talking historical when I bitch about the Tolkien fetish. How about more sci-fi or alternate realities? More Fallout, less Baldur's Gate.