> Another scandal emerged recently when it was revealed that Amazon’s same-day delivery service was unavailable for ZIP codes in predominantly black neighborhoods.

Without knowing the details behind this, it seems likely that Amazon and other web companies could be been "discriminatory" for purely business reasons. Predominantly black neighborhoods are likely to spend less totally and per customer than average, especially in urban areas where blacks are on the bottom of high inequality. Amazon provides greater service to wealthier neighborhoods for the same reasons as brick and mortar businesses.