I hired a wife. And my career took off. I see this a lot in the wealthier parts of London. Well off middle classes using South Americans and Filipinos to do all the domestic work and childcare. Whilst they get on with their careers. Despite what this article says these women aren't raking it in. These women come from less well off parts of the world. Live far away from their own families. From chatting to some of them they miss their families. There is also an inequality gap between different parts of the world.