Facebook is making a $6 billion bet on a company owned by India's richest man. Meet the Ambanis, who live in a $1 billion skyscraper and mingle with royals and Bollywood stars.
· Facebook is investing $5.7 billion in Jio Platforms, a telecom company owned by India's richest man, both companies announced on Wednesday.
· Mukesh Ambani is worth an estimated $44.6 billion, making him the 19th-richest person in the world, according to Bloomberg's Billionaires Index.
· He's the chairman and majority...