Megan wonders, why don't the ultra-wealthy have more servants?

Her suggested reasons here. My favorites:

5.  Labor saving devices  Servants were often standing in for things that machines now do more cheaply, and without stealing the silver.  

6.  Cultural mores We have a much greater affection for personal space than people did in the era of large families and small heating appliances.  Most people don't want anyone else in their personal space.

7. Liability  These days, you're liable for the actions of your employees in a surprisingly wide variety of circumstances.  Safer not to have employees.

Of course, there is a huge nanny industry here in Manhattan. Photo link here.