The Telecom Industry

How mobile and internet companies make money, why the industry needs huge investment, and why governments regulate it closely.

Telecommunications, or telecom, covers the networks that carry voice calls, text messages and internet data: mobile networks, fixed-line broadband, fibre optic cables and satellites.

How telecom companies earn money

Mobile subscriptions: prepaid recharges and postpaid plans for calls and data.
Broadband services for homes and businesses.
Enterprise services for companies and governments.
Wholesale: carrying other operators’ traffic.

A key measure is average revenue per user, or ARPU: how much an operator earns per subscriber each month. Indian operators have had some of the lowest ARPUs in the world, reflecting very low prices.

Huge fixed costs

Telecom networks require enormous upfront investment:

Spectrum: the radio frequencies needed for mobile service, bought from governments, often for billions of dollars.
Towers, base stations and fibre across the country.
Technology upgrades, from 2G to 3G, 4G and 5G.

Once built, serving an extra customer costs relatively little. This gives large operators economies of scale and makes entry by new competitors difficult.

Network effects

Communication networks become more valuable as more people join. This helped phones and messaging apps spread rapidly.

Why regulation matters

Spectrum is scarce and allocated by governments.
Few competitors: high fixed costs mean markets often have only a few operators, raising concerns about pricing power.
Interconnection: operators must connect with each other so customers of one network can call another.
Consumer protection, privacy and security.

In India, the Telecom Regulatory Authority of India, TRAI, established in 1997, regulates tariffs and quality, while the Department of Telecommunications licenses operators. The Telecommunications Act, 2023 replaced laws dating back to 1885.

The cost of a new network

An operator building a 5G network must pay for spectrum, install equipment on thousands of towers and lay fibre to connect them. These costs are paid before earning any revenue from 5G customers. Only companies with deep pockets or access to large loans can compete, which is why the industry tends toward a few large players.

Thinking telecom is cheap to run because calls cost little

The cost of an individual call or megabyte is small, but building and maintaining networks and buying spectrum requires enormous investment that must be recovered from customers over years.

Key takeaways

Telecom companies earn from mobile, broadband, enterprise and wholesale services.
Networks require huge fixed investments in spectrum, towers and fibre.
Network effects and economies of scale shape the industry.
India's telecom sector is regulated by TRAI and governed by the Telecommunications Act, 2023.