"Business marriage" was the very purpose of marrying in the first place from the very start. Money marries money. Over time, less privileged people started infiltrating to ease the situation due to the inbreeding of the aristocracy. Queen Victoria married off her children into royal families all over Europe. That's the purpose of marriage: money and power. We have to come to terms that it is first and foremost a business transaction. Otherwise only one side would be paying all the bills and taking care of the family while the other lives their best life, as we like to say nowadays.