"There has to be some form of shakeout where you end up with five, may be six, operators. That will happen through a combination of three things - acquisitions, spectrum trading and sharing," Bharti Airtel Joint Managing Director and Chief Executive Officer (India Operations) Gopal Vittal told PTI.
He said consolidation is needed because the spectrum holding of individual operators in India is very small due to which costs are high.
According to rating agency Fitch, India can in the long run support five-six profitable telecom operators. Currently, there are about a dozen players, with many making losses.
Airtel, India's largest telecom company, recently bought Mumbai-based Loop Mobile for about Rs 700 crore and was among the eight companies that bid for spectrum in an auction this month. The operator's licences in Delhi and Kolkata are due to expire in November.
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He added that the company had bought spectrum as an asset, anticipating enormous demand.
"In 20 years, how much change is going to be, we don't know...I think the need for spectrum in this market is going to be so enormous going forward that we would be sitting five years later and saying thank god we've got spectrum," he said.
Bharti Airtel, Vodafone, Idea Cellular and Reliance Jio Infocomm bought most of the spectrum in the recently concluded auction for the 900 MHz and 1800 MHz bands, which fetched the government bids worth Rs 61,162 crore.