It seems that owners of restaurants and food stalls are called "Boss" (at least in the subtitles) almost universally in Hong Kong movies. Does this make sense from some linguistic/cultural angle? I don't think it is ever commented on by any of the characters--no "Don't call me boss" for example--and it doesn't seem to be a term that is used when addressing other small business owners. Is there a Cantonese word that doesn't have the same meaning as boss in English but that sounds like it?
A very minor detail, of course, which has nothing to do with anything.