The Ambani Family — $120 Billion (Reliance)

Dhirubhai Ambani started Reliance Industries as a textile trading company in 1966 with $150. His son Mukesh Ambani is now the richest person in Asia at $120 billion. Reliance controls 40% of India's refining capacity, Jio (India's largest telecom with 450 million subscribers), and a retail empire with 18,000+ stores. Mukesh's home — Antilia in Mumbai — is a 27-story, $2 billion private residence with a staff of 600. It's the most expensive private home ever built. The family went from a $150 textile business to a $120 billion fortune in two generations. India's capitalism story in a single family name.