I agree with the author. However, you'd never manage to sell a game with an Indian, Chinese, or Ukrainian protagonist.
People just wouldn't identify with the main character.
The producers are not from that culture, so they would be producing something about a culture they know nothing about.
Much as we scream about every FPS being a space marine shooting monsters, that is the mainstream, and that sells, anything that deviates from this main stream is just seen as weird and people don't like buying things they know nothing about.
Very simple example, I read a post recently on a Chinese forum made of entirely pictures with captions, telling the story of a man who hitch-hiked on a transport lorry, it's a pretty simple and inspiring road trip story, Hemmingway style if Hemmingway used cameras. However, when I sent this link to a friend of mine, who is also very interested in travel stories since we are planning a road trip in the near future. He just couldn't identify with the main characters, who were young, like him; working class, like him; didn't have much money, like him; hard working, like him; but Chinese, while he was English. The cultural gap meant he thought it was interesting to see these people eating at roadside food joints for £0.5/person, but he's never seen such a place before in real life, he just can't place himself in these people's shoes.