he travel eSIM category went from novelty to default in about four years. A traveller who once queued for an airport SIM or paid retail roaming now installs a data plan from an app in the departure lounge; industry estimates put the consumer travel eSIM market in the low billions of dollars annually and growing at strong double digits. Every gigabyte of that traffic terminates on a mobile operator's network — and yet most operators participate only as anonymous wholesale capacity at the bottom of someone else's brand. The interesting question for an operator in 2026 is not whether travel eSIM erodes retail roaming — it demonstrably does — but which of the four available positions in the new value chain to occupy deliberately.
What actually happened to roaming revenue
Retail roaming was already structurally squeezed before eSIM: regulatory caps in several regions, roam-like-home zones, and the silent-roamer problem — travellers who simply switch data off rather than pay. Travel eSIM did not start the erosion; it industrialised the alternative. The consumer behaviour shift is one-directional because the product is genuinely better: instant provisioning, transparent pricing, no physical logistics. Operators that model travel eSIM as a temporary arbitrage to be waited out are modelling the wrong decade. The GSMA consumer eSIM specification (SGP.22) made device-side friction disappear as handset support became near-universal in the smartphone installed base; the remaining question is purely commercial.
The value chain, and where the margin sits
A typical travel eSIM sale stacks four parties: the consumer brand (the app), an eSIM enablement platform providing RSP infrastructure, a sponsor operator whose IMSI range and roaming agreements the plan actually rides, and the visited network where the traffic terminates. Industry-typical wholesale data rates in competitive corridors run in the $0.50–2.00 per GB range, while the retail travel eSIM price for the same gigabyte commonly sits at $3–10. The spread is shared among brand, platform, and sponsor — and the visited network at the bottom collects only the wholesale floor. The margin, in other words, accrues to whoever owns the customer relationship and the sponsorship layer, not to whoever owns the radio network.
The four operator plays
- Wholesale at scale — lean into being the capacity layer: negotiate direct data agreements with the major eSIM platforms, price per-GB tiers aggressively for volume, and treat inbound travel eSIM traffic as a wholesale product with its own account management rather than an accident of roaming agreements.
- Own travel brand — launch an operator-branded travel eSIM for the home subscriber base's outbound travel and for global inbound. Defensive value (keep your own subscribers' travel spend) plus offensive reach; the catch is that it competes on app-store shelf space against digital-native brands.
- Sponsorship — become the sponsor operator whose IMSI ranges and roaming footprint other brands ride. This is the highest-leverage position after the brand itself: every plan sold by every brand on your sponsorship earns a share, and it monetises roaming agreements you already hold.
- Inbound capture — own the visitor at the destination: QR-based eSIM at airports, hotel partnerships, tourism-board bundles. Highest margin per user of the four, because the operator is the brand and the network at once.
What each play requires
The infrastructure gradient is steep. Wholesale requires little beyond commercial discipline and traffic analytics. The brand and inbound plays need consumer-grade RSP (SM-DP+ capacity, QR provisioning flows, app or web storefronts) plus the unglamorous machinery — entitlement handling, top-up billing, customer support in the traveller's language. Sponsorship requires virtual SIM management: multi-IMSI orchestration, the ability to mint and manage profiles for third-party brands, per-brand billing separation, and real-time usage control so a $10 plan cannot silently consume $200 of wholesale capacity. That orchestration layer — virtual SIM management — is the piece most operators do not have in-house and the one that gates the two highest-margin plays.
The adjacent line: IoT and SGP.32
The same infrastructure earns twice. The GSMA's SGP.32 specification for IoT eSIM remote provisioning opens the enterprise-fleet version of the travel story: logistics trackers, connected vehicles, and payment terminals that switch profiles across borders under an eIM (eSIM IoT Manager) rather than a consumer app. Operators that stand up profile-management capability for travel eSIM are one integration away from the enterprise connectivity market — and the enterprise buyers, unlike travel eSIM brands, sign multi-year agreements. See the glossary entries on SGP.32 and the eSIM ES interfaces for the architecture.
How to sequence it
The pragmatic order for most operators: formalise the wholesale position this quarter (the traffic already exists; only the account management is missing), stand up inbound capture next (it monetises the home-market advantage no global brand can replicate), and evaluate sponsorship and the outbound brand once the profile-management infrastructure is in place. The common failure is inversion — announcing a consumer travel brand first, then discovering the RSP, billing, and support stack takes four quarters to build while the wholesale and inbound revenue sat unclaimed the whole time.
BroadNet's eSIM and virtual SIM management platform gives operators the profile orchestration, per-brand billing, and usage-control layer behind the sponsorship and inbound plays — see the operator solutions overview for how it fits the wider stack.