The issue is not really the sanctioning per se… The issue is government can effectively tell women don’t choose Bob, choose Charlie instead. In US, that’s what government do if Charlie is single. In muslim countries that’s what government would do if Charlie is muslim.
Imagine if government has power to tell customers don’t buy iPhone, buy Samsung instead? Apple and Samsung won’t bother doing R&D to build better phones. They just bribe government official. The same way men don’t bother offering best offers for women. They just pay religious leaders, and feminazis to rule in their favor. Many hot babes are then underpaid.
I am always suspicious that there is a strong connection between economy and politic.
Before slaves are the only way to get things done better. So incentive to support slavery is high.
Then industrialization run high and low paid workers can get paid higher. More and more capitalists find it easier to just pay workers than enslave them. Obviously those workers want it too. Unfortunately, those workers can’t just move out. So there are bigger forces that want them to eliminate slavery. Either through democracy or through civil wars, those 2 forces fight and slavery is gone.