Factory Farming with Women and Industrialised Childmurder
Souls in your world are like milk, eggs and meat in ours. Highly desired products which can humanely and at a high quality only be provided in a small quantity. Thus humanely and high quality go out of the window to satisfy the thirst of the many consumers. The living conditions of the women will be akin to cattle in factory farms.
On that note there are two factors we need to consider about this, firstly how old a baby needs to be to have a soul and how functional a woman has to be to successfully bear a child meant for the butchers block.
While I'm unwilling to get into the debate if life and a soul is created at conception, it seem to be a lazy handwave one could use to circumvent the issue. Yet looking at the picture above the head of the fetus looks developed enough for me to contain a soul between 4 and 6 months. If this were to be the case it would be great news, since forced late abortion could cut the cost for the farmer or pimp by 30 to 60% compared to regular childbirth, which wpuld be great for the consumers of souls, too since it would make the prices even lower.
The secound point isn't really about the functionality of the child production mechanism in a woman under different conditions, it is rather about the most economic way to keep them in the stable. Fully comatose women can get pregnant and birth functioning children but keeping them alive in a coma sounds like it requires more resources to keep them alive than just leaving the active, so it won't be a consumer friendly and thus unpopular method. Yet keeping fully functional women in the stables will cost a lot, too due to the security and conditioning required to kerp the peace. Thus I suggest that a few female babies with disierable traits are used to breed a more compliment herd of lifestock and that those breeding women are made mentally disabled by a surgical procedure (bashing them over the head with a crowbar might suffice). A trait which would be highly desirable would be an extremely early onset of ovulation. Acvording to this article this may happen at an azge of eight months and the girl in question gave birth at 5. This promises huge cuts in breeding cist compared to the usual 11 to 12 year growth time.
An interesting spinn on this could be a the production of higher value souls, whose mothers lived better lives than the factory farm lifestock. Maybe baby corpes freely produced by poor women for their financial survival or even self-produced via a The Handmaids Tale private prostitutes could be the soul equivalent of free-range farming and organic food.
If your worlds societies are like ours there are none, except from a few naive activists.
This might sound harsh, but looking at the history of slavery, child labor, sex trafficking, factory farming and society's general acceptance/unwillingness to give up commodities for the betterment of third world citizens living standards/practiced ignorance of these horrible conditions shows that this what the market and the culture of consume which have developed in every industrialised and in certain ways in pre industrial societies lead to if the profit incentive is strong enough.
I don't believe that such a stance as I suggested your society will have towards women and children is in any way right or good. I just started extrapolating situations similar to your question and things turned dark and uncomfortably real.