It s pretty well established that Wikipedia doesn t follow unusual capitaliztion schemes and standardizes names to regualr English rules barring a few exceptions The Time example cited is exactly the standard that applies here As such Fox not FOX should be used The concern about ABC CBS and NBC and the CW for that matter is unfounded in my opinion as those are initialisms whereas Fox is not If we were to use one FBC would be correct but that is not used in common usage and therefore we can t use it either