Actually, they have those here. Minus the massages, of course. I know a WAPF chapter leader who is a mother of five with one more now starting to cook. She has a helper/nanny. The only issue with the concept, is that it's not for the faint of wallet. In other words, they're rich, and other traditional/raw moms don't have that kind of money.
It'd be interesting if they had some sort of organization that paid the helpers and the helpers would help the individual families at no cost to the families themselves.