This logic applies not only to start-ups, but even large companies in new businesses, like Reliance Jio, which aggregated 100 million users in the shortest possible time by giving them free voice and data services. During the launch in September 2016, Mukesh Ambani called Jio “the world’s largest start-up”, and his moment of truth will come in 2017-18, when users must start paying for Jio services. Having invested over Rs 1.5 lakh crore, and with further commitments to invest upto Rs 1 lakh crore more, Ambani has essentially bet the farm on data revenues when tariffs are crashing due to hyper-competition. His challenge is to ensure that revenues not only cover the cost of running the network, but also the humongous cost of capital invested. An investment of Rs 1,50,000 crore, assuming a minimum return of 10 per cent on capital, means Rs 15,000 crore of annual operating margins merely to break even on capital costs. Other costs—like maintaining the network, retail presence etc are extra.