Growth Systems series · Volume 04

Acquiring the next billion

Financial inclusion is the largest growth opportunity of the decade — and the one where classic performance marketing fails hardest. Adoption isn't bought with a clever ad. It's earned with trust, agents and habit.

Growth Marketing AI · Boutique growth advisory · Europe ⇄ Africa

Bringing a first financial product to someone who has never had a bank account is not a conversion problem. It is a trust, habit and access problem, and the marketing stack most fintechs bring to it was built for none of those. The playbook that acquires a salaried professional in a mature market — targeted ads, a slick funnel, an instant card signup — produces expensive silence when pointed at the underbanked. Winning the next billion requires a different growth system entirely.

Why performance marketing hits a wall

Performance marketing is a demand-capture engine. It finds people already searching for a solution and routes them to yours. But a first-time financial-services user is usually not searching. They have no category vocabulary, often limited data connectivity, and a rational skepticism toward putting money into an app they've never heard of. There is no existing intent to capture — so the auction you're bidding into is either empty or full of the wrong people. The result is a CAC that never reaches payback.

The four levers that actually drive adoption

1. Trust, transferred through people

Adoption travels through human networks: agents, community leaders, existing users who vouch. This is why agent-led and referral-led motions outperform paid acquisition by wide margins in inclusion markets. The most efficient acquisition channel is a trusted person saying "I use this, it works." Your job is to build the loop that manufactures and rewards those moments at scale.

2. The first successful transaction

In inclusion, activation is everything. A user who completes one successful transaction — a transfer that arrives, a payment that clears — converts belief into habit. Everything in the onboarding system should be engineered to get a nervous first-time user to that single moment of proof as fast and safely as possible. Retention is won or lost in the first week.

3. Habit and frequency, not features

Inclusion products win by embedding into a recurring real-life need — remittances, merchant payments, savings toward a specific goal. Frequency builds habit; habit builds retention; retention is what makes the unit economics of a low-ARPU user finally work. Feature breadth, added too early, is a distraction that dilutes the core loop.

4. Distribution as product

Regional payment interoperability, agent networks and mobile-money rails aren't logistics — they are the growth engine. Adoption scales fastest where the rails already reach and where regulation lets one motion travel across borders, as the francophone West African markets show. Where distribution is designed as part of the product, acquisition cost falls structurally.

The opportunity, in numbers

This is not a niche. Fintech across Africa continues to attract serious capital — Nigeria alone drew several hundred million dollars in fintech funding through a cautious 2024 (estimates vary by scope, from roughly US$400M for narrowly-defined fintech startups to over US$1bn for the broader ecosystem). And on McKinsey's projections, francophone West Africa and Ghana were forecast to be among the continent's fastest-growing fintech markets — on the order of 13% and 15% a year through 2025. The demand is structural and the runway is long. The constraint is not appetite; it's whether your growth system is built for how these users actually adopt.

Sources: McKinsey, Fintech in Africa: The end of the beginning (2022); African fintech funding trackers (2024). Figures are directional — verify against the latest data before citing externally.

Build the system, not the campaign

Acquiring the next billion rewards operators who build documented, trust-based, distribution-led growth engines and punishes those who buy clicks. The metrics that matter shift accordingly: not cost-per-click, but cost-per-activated-user, first-transaction rate, and 30-day retention. Get the system right and you don't just acquire customers — you build the category they'll stay in.