Another late reply (: but,
IMO, inclusiveness is lip service, if you ignore history, follow a narrative, or don't include culture.
Frex, we did have blacks in historically important wars, but they were often NOT integrated. Some Hollywood movies overlooked that.
In boardgames, BGG'ers are particularly sensitive about diversity (and we had that handicapped miniatures thread), but the solution tends to be sticking a minority into the party and leave it at that.
In
RPG's, we have very little African culture. Yet, Legend of the Five Rings has both an
RPG and
CCG that delves hard into Japanese mythology. D&D had its Orientals Adventures supplement.
Magic the Gathering is the only game I know that had an Africa-centric expansion that went beyond skin color. Its Visions set is an impressive set that's based on a fictional African continent. (Unfortunately, years later, we'd have a tweet by a freelancer about his experience with WotC's racism: "Game designer Orion D. Black has left their job at Wizards of the Coast’s Dungeons & Dragons department, calling out the company for paying lip service towards diversity and change while exploiting BIPOC, especially Black freelancers, and silencing and ignoring criticism of systemic problems.")
This is a "rich white male" hobby. Again,
IMO, you're not going to change it because of the "lip service" of including diverse sculpts, but fundamental changes. Frex, Eurogames have a higher proportion of female gamers than Ameritrash games, not because they have "female figures" (although BGG'ers are certainly demanding them), but because Eurogames have an emphasis on non-violent non-confrontational interactions, not that you can't find a female player who'd happily play a loinclothed barbarian carving up everything in sight.
That said, you could argue that the hobby *is* inclusive -- if you think that fictional races are not discounted because they're not real. That's definitely a controversy in itself, as, the farther you go from a European-style fantasy race, the more evil the race tends to be. Conversely, many players *like* to play unusual races, arguably giving players an opportunity to play diversity on their own terms.
Unless they play a furry. No way am I gonna let one of *those* in my campaigns.
EDIT: In the end, or at least for miniatures, it comes down to supply and demand. Create a reason for these for these sculpts, other than because someone else says you should, and they'll be made. As previously said, 3D printing should help, as it allows individuals to print miniatures whose sculpts are not in high enough demand for a larger market. I sure wouldn't mind more ethnic diversity in gaming -- perhaps more cyberpunk?
EDIT EDIT: With
RPG's, you can -- and we should expect to have -- ethnic diversity when two different cultures are able to interact. A port which acts as trade between two different cultures would be an example, and I think that, with the great ability to travel in the future, futuristic settings should take diversity for granted (eg. Spelljammer, cyberpunk). With wargames, you have different fantasy races fighting each other all the time, and, in RL, you certainly had conflicts across race (as well as sects, political factions, socioeconomic classes) -- although I dunno if that sort of thing would be welcomed in gaming.
I sure don't have an answer, so please discuss! 
