India's telecoms industry has been riding a storm since 2017, when Asia's richest man Mukesh Ambani's Reliance Jio entered the market and launched a bruising price war by slashing tariffs and remaking a voice market into a data one.India's telecoms industry has been riding a storm since 2017, when Asia's richest man Mukesh Ambani's Reliance Jio entered the market and launched a bruising price war by slashing tariffs and remaking a voice market into a data one.