It's got nothing to do with black or white. Ppl buy into fashion for brand's story, prestige, kudos aswell as the design and product quality. Blu cant compete with fashion houses in all these factors and then on top of that the design is super played out and more expensive. Other black brands do very well,
Oswald boateng, Mr Hare, A Sauvage etc, because they have brand story, history, and design.
At the end of the day, people buy from brands that have established themselves it that field. Even Louis Vuitton struggle to sell their clothes, why, because they are a baggage brand. People go to LV to buy bags. So why is a knowledgable consumer going to pay over the odds for a shoe made by a

rapper?