Why does the number of monogamous marriages often exceed polygynous ones in cultures where polygyny is preferred?

Question

Why does the number of monogamous marriages often exceed polygynous ones in cultures where polygyny is preferred?​

Quizplus · Accepted Answer

Insufficient household wealth is often a limiting factor in cultures where polygyny is preferred, as maintaining multiple wives and their children requires significant economic resources. This economic constraint makes monogamous marriages more common despite the cultural preference for polygyny.

Why Does the Number of Monogamous Marriages Often Exceed Polygynous