Inside the billionaire service industry – “‘If the income inequality persists, we could end up with real armed camps, like in South Africa.’ She said she was increasingly aware of the tension between the ‘haves’ and the ‘have-nots,’ and she described a surge in demand among the ultrarich for real estate in out-of-the-way places such as New Zealand and rural Argentina–expensive insurance policies in case things go haywire for some reason at home.”