Those who know him, say that Mukesh Ambani, the 58-year-old chairman of Reliance Industries, a man legendary for his business foresight and work ethic, has never worked harder in his life.

"He's putting in 17/18 hours a day," said an insider, "giving his all to the highly anticipated telecommunications and digital venture Reliance Jio." And according to her, this means that the tycoon is cutting back vastly on his only indulgence: the evenings spent with his family and close friends, watching a movie (typically Bollywood) to unwind.