Look at Viki, a really popular VOD site, acquired by Rakuten for $200 million or so. Focuses heavily on South Korean, Chinese, and Japanese dramas. Segregation? More like making it easy for people who want to watch the shows to find and follow them regularly. Successful? Yep. This sort of media consumption is here now.
AfroStream did the same thing as Viki but instead of Asian countries used the African diaspora. Didn't follow them so don't know what the business reasons are for their failure, but relating it to diversity and segregation seems unwarranted.
It's more like they were targeting the long tail of media consumption, even if unsuccessfully.