There’s absolutely nothing strange or interesting about that. Contrary to the myth out there, many marriages happen for a reason other than love.
For example there are many people who wouldn’t marry their spouse if they are one eyed, had no legs, don’t have a college degree, have poor credit, are HIV+, etc. etc. Another reason many people get married, particularly in poorer economies is economic reasons. People all over the world from antiquity have married for economic reasons.
Many of my Indian classmates had arranged marriages to partners they didn’t know until a week or two before the marriage. Very obviously love was not the main factor and yet most of those marriages survived and thrived to the end.
Westerners may find that strange or claim to find it strange, however there’s nothing strange about it and to me it’s just hypocrisy or lack of understanding how things work in this world.
Economic opportunity happens to be one reason and it’s as legitimate as the next. It’s nobody’s business except the two people involved if the precipitating reason for the “love” is economic opportunity.
My $0.02.