Steve Ballmer vs. Bernard Arnault & family

Ballmer and Microsoft cofounder Bill Gates were classmates at Harvard. Ballmer created a website called USAFacts.org for people to look up and understand where the government is spending money.

Arnault apparently wooed his wife, Helene Mercier, a concert pianist, by playing Chopin and other classical composers on the piano. Arnault and LVMH own a 40% stake in private equity firm L Catterton, which has $30 billion in assets, including investments in Birkenstock and Equinox.