The prevalence and spread of BBC-based fetishism is because the vast majority of the earth's population carries White and Asian blood, meaning that the notion of "Othering" is more potent for the cuckold-centric nature of the fetish. The idea that one can be as unlike oneself as possible is what brings it its flavor, and any kind of fetishism based around it affirms that fantasy, regardless of who the subjects in question are. Interracial, in this regard, can really only thrive as either a vehicle for blacks seeking to have a good source of self-insert material, or non-blacks, who represent a dramatically larger portion of the pornography-consuming crowd, as cuckold material. One can mock cuckolds for being pathetic, but they are getting precisely what they want out of it.
The prevalence of BWC-posting is one of immeasurable insecurity. Porn, by default, primarily stars white actors (unless you're looking into porn of other regions), and thus will be the common default in almost all pornographic scenarios, variations, and genres. To feel a need and urge to isolate this Default in order to battle an imagined enemy of foreign/interracial porn consumers pangs painfully of one who feels threatened by others, and is actively attempting to foist "competition" in this imagined porn-consuming space. If you are actually white, there is no value to be gained in this, as you are still the most common representative in male pornstars in the industry. The only other answer could be strictly nonwhite cuckoldry through raceplay based on hierarchical racial fixation, which is literally more embarrassing than defensive race-based pornographic tribalism. I have to presume every BWC poster is either some teenage groyper or some Indian/Spic who wishes they were white, where every BBCposter can be anywhere from your garden variety shitposting retard to a C-Suite executive who simply has an alternative need for stimulation.
