Complement Tenancy

Somewhere in the Atacama Desert, out of reach of any Chilean cellular operator, an astronomer sends a video message that goes through. The screen says "Entel’s network". But most of the connection belongs to Starlink, which has said it expects to take customers directly from mobile operators.

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Within a few weeks of each other, the CEO of América Móvil, the CEO of T-Mobile US, and a Santander telecom research desk described Starlink's mobile service as complementary to traditional operators’ networks.

Three markets, one word, and the same logic behind it: each of them sits between Starlink and the customer.

Starlink's fixed broadband business reaches the customer directly, dish to satellite, with no operator in the chain. Its mobile business does not.

Starlink reaches the phone through the cellular operator's spectrum and bills the customer through the operator's brand, so today the operator captures the customer relationship and a share of the revenue while contributing an asset it already owns.

Remove the spectrum and Starlink has no route to the handset. Keep it and the arrangement stays complementary. Nothing else in the deal is the operator's, and nothing in the constellation depends on the operator's network.

SpaceX's first public quarter shows what that position is worth to the other side, and how quickly it can change. The connectivity business behind the arrangement already earns operator-grade margins without owning a ground network, so the incentive to stop sharing revenue is economic.

That is the house position: Starlink stays a partner in Latin America through 2027 because regulators there still require it to reach the phone through a licensed operator, and it has already stopped being one in the US because it now owns spectrum of its own. Any operator planning on the first timeline while its regulator is drafting the second is reading the wrong calendar.

Every current Starlink mobile offer reaches the phone through a traditional operator's spectrum and billing relationship. Gwynne Shotwell, President and COO, said on the August 4 call that the direct-to-cell system runs on about 5 MHz of bandwidth operated through local telco providers. Starlink does not hold that spectrum. It borrows it.

The structure repeats in every market where the service exists. T-Mobile's T-Satellite runs on T-Mobile's licensed band under FCC authorization. Entel's service in Chile and Peru runs on Entel's bands. On América Móvil's Q1 call on April 22, CEO Daniel Hajj confirmed talks with Starlink and said the operator would need to provide the spectrum for the service to work.

Regulators are writing the same structure into law. In July, Anatel approved a direct-to-device framework in Brazil that requires satellite operators to work in partnership with the operator holding the mobile license. Mexico has yet to define any spectrum path for satellite operators.

That is why "complementary" comes from the same place every time. Hajj was mid-negotiation with Starlink. Santander's Latam telecom note of July 24 was written about the operators it covers. T-Mobile US CEO Srini Gopalan was speaking to the Financial Times with a T-Satellite contract in force.

Each of them sits between Starlink and the customer, and from that seat the arrangement looks complementary. The operator brings the license and the customer. Starlink brings the satellites and keeps most of the margin.

Gopalan and Santander are right on the physics. A satellite beam over a dense city cannot serve millions of simultaneous users, and the V3 generation does not change that. Satellite will not replace the tower. The open question is who controls the complement once the borrowed spectrum is no longer borrowed.

Connectivity revenue reached $4,291 million in Q2, up 66% year over year and 32% sequentially, and produced $2,597 million of adjusted EBITDA, a 60.5% margin. Income from operations rose 79% to $1,656 million, close to three points of margin expansion, on a subscriber base that doubled to 12.0 million from 6.0 million a year earlier at a flat $66 ARPU (SpaceX has not disclosed the definition).

Those are the margins of a mature operator, earned almost entirely from a fixed broadband business Starlink runs on its own dish and its own satellites, with no telco in the chain.

The mix is moving toward the customers operators value most. Enterprise & Government revenue grew 108% to $1,806 million and now represents 42% of the segment, up from 33.5% a year ago. Elon Musk, Founder and CEO, said he expects enterprise revenue to substantially exceed consumer revenue.

Read those numbers from an operator's chair. A partner earning a 60% EBITDA margin on its own network has an economic reason, not merely a strategic one, to stop sharing revenue with whoever holds the license between it and the customer. Shotwell sized the US big three at roughly $600 billion a year, a management characterization not verified here, and said the company expects to acquire quite a few of their customers.

The FCC approved the transfer of EchoStar licenses covering 65 MHz of US spectrum, including terrestrial rights. SpaceX paid $856 million in the quarter under the related spectrum credit agreement, against a balance sheet holding $100 billion of cash and marketable securities. Press reports citing Reuters put the two EchoStar deals at a combined $19.6 billion; SpaceX has not confirmed that total. Integration is planned for 2027.

The plan to reach the phone without carrier towers is already on the record. SpaceX described placing cellular base stations on the mounts of Starlink broadband dishes, deployed as small cells as demand appears, and declined to give Capex for the terrestrial build. Nothing in that description requires a partner.

The same satellites that make T-Satellite possible turned T-Mobile from wholesale partner into named target inside one earnings call. Shotwell named AT&T, Verizon and T-Mobile, and TheStreet reports that investors sold all three carriers' shares the following day. The satellites did not change on August 4. The license map did.

Latin America should read that sequence carefully, because nothing on the regional license map has moved. Brazil's framework requires the partner. Mexico has no reported framework. Starlink's path to a phone in both markets still runs through Vivo, TIM, Claro and Telcel.

"Complementary" is accurate in the region today for a reason the operators do not control: their regulators have not sold or reassigned the spectrum that would end the tenancy.

On the August 4 call, Gwynne Shotwell, president and COO of SpaceX, told analysts the company was "holding ARPU stable" at $66 a month, comparing against the first quarter. The SEC-filed release puts the same metric at $85 in the second quarter of 2025. Stable against March; down 22% against last year.

Run one test on any partnership with a stated future competitor. First: does the partner need this operator's spectrum or customer relationship to reach the end user. Second: what single event removes that need. If the answer to the second is a license transfer or a rule change, the partnership has a date on it, and the operator does not control the calendar.

Three dates to track:

Then take one question into the next strategy review: which license or rule, in which market, would let this partner reach the customer without us, and what are we doing about that event before it is announced.

If this analysis changed how you read the word "complementary" in a partnership deck, it will likely sharpen someone else's view too.

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