The story of Romeo and Juliet is stuck in the pre-industrial commercial era. It was very common prior to the industrial countries emergence 150 years ago for family feuds to be the dominant element on the social landscapes.
We have escaped the world of family feuds. Most of the planet is still in that tragic era.
Commerce requires of us that we are convivial in dealing with retail employees and most importantly that we are convivial in our dealings with fellow employees in our work environment. Commerce makes us much more decent people.
Because commerce rewards meritocracy it simultaneously must suppress family feuds of the Romeo and Juliet model.
While the modern version of Romeo and Juliet is West Side Story, where ethnicity keeps the couple apart, America has very little of that inter ethnic, inter racial antagonism thanks to commerce.