What further dialogue could be possible with these rich merchants of no interest? Not really a merchant marine, only a department store merchant, so no family complications there. Nothing worth saying about that.
You were saying something about "The Man of La Mancha," the movie, based on the musical, and why would a glamorous Italian actress, Sophia Loren, be called on to play the role of lowly Spanish barmaid Dulcinea? Was that a matter of miscasting, or a matter of box office chemistry? Yes, these questions are not high on my priority list of things to think deeply about. Your mind is a useless place full of trivialities not worth pondering.
