Sachin and Binny Bansal, Flipkart’s founders and India’s first e-commerce billionaires, debuted on Forbes’ list of India’s 100 richest people with a net worth of $1.3 billion. Mukesh Ambani continued to top the list, though lower oil prices took a toll on Reliance Industries, which saw its stock tumble on declining revenues. As many as 10 on the list lost $1 billion in net worth each, including steel tycoon Lakshmi Mittal, who slipped three places to eighth.