Oppose. WP:MOSTM, the guideline covering trademarks and brands, explicitly states not to do this. We don't need articles with titles like REALTOR, TIME, Se7en, Alien³, etc., despite those being their "official" names: these are brandings, and are designed to promote their products. But Wikipedia is not supposed to be promotional. NBC, CBS, and ABC are actual abbreviations, and are pronounced en-bee-cee, cee-bee-ess, ay-bee-cee. A reader who is truly unfamiliar with Fox in this context will end up pronouncing it "eff-oh-ecks".