Mukesh Ambani chairs and runs $74 billion (revenue) Reliance Industries, which has interests in petrochemicals, oil and gas, telecom and retail. Reliance was founded by his late father Dhirubhai Ambani, a yarn trader, in 1966 as a small textile manufacturer. After his father’s death in 2002, Ambani and his younger sibling Anil divvied up the family empire. In 2016, Reliance sparked a price war in India’s hyper-competitive telecom market with the launch of 4G phone service Jio. During the Covid-19 lockdown, Ambani raised more than $20 billion selling a third of Jio to a string of investors, such as Facebook and Google.