"We expect Reliance Jio to gain less than a 2 per cent revenue market share in 2017, but to act a major price-disruptor," it said in a note today.
The top four existing telcos will consolidate their revenue market share by eating into the revenues of the smaller players, it said.
The agency expects Bharti Airtel, Vodafone India, Idea Cellular and Rcom/Aircel's market share to go up to 84 per cent from 79 per cent in 2016.
Earlier this week, Ambani had asserted that Jio is a well thought-out venture and not a "punt".
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"First and foremost, it is no punt. It is a well-thought, well-executed, well-engineered ecosystem. It is a Rs 2,50,000 crore investment," Ambani had said in a media interaction last week.
The industry's revenue growth could slow down to mid single-digit from 7-8 per cent in 2016 on lower data revenue growth, where it expects tariffs to fall by up to 20 per cent.
The pre-tax profit margins of the top four telcos, which stood at 34 per cent in 2016, will be hit by up to 2 percentage points, it said, attributing it to lower tariffs and increased marketing spend as data competition rises.
The free cash flows will be negative as cash generation is likely to fall short of capex requirements, the report said.
On its stable outlook for the Anil Ambani-led company, the company said it is based on the expectation that Rcom will use the proceeds from the sale of tower assets to improve leverage.
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