Some insights from the Lunch with the FT collection of interviews:
Jeff Bezos, Founder of Amazon, interviewed by Andrew Davidson:
His working hours? "I do 60 a week, any less I get bored, any more, tired. I mean, what do people do who do less? How do they fill the time?"
Families, hobbies, television. He frowns, as if he doesn't quite understand.
Oleg Deripaska, billionaire aluminium magnate, interviewed by Gideon Rachman:
Why not cash out? I ask. Deripaska looks faintly indignant - "And do what?" he asks.