Women with multiple husbands have been more historically prevalent than originally thought. It tended to happen in societies that are more egalitarian and when there was a shortage of sexually fertile women.
So……thanks to the egalitarian thing “(i.e., societies with very simple social structures, without massive governmental bureaucracies and elaborate class structures)”, we probably won’t see it show up in countries with gender imbalances such as China and India.
And thanks to the whole shortage of chicks thing, we probably won’t see it in countries where it just might be fun. Dang sexually-fertile, hot, sexy women!