Every marketplace expansion pitch opens the same way: a growth rate. Southeast Asia is compounding at 20%. Latin America is the fastest-growing ecommerce region on earth. The Gulf is up 41% year on year.
Those numbers are real. They are also the worst possible basis for deciding where to sell next.
Growth rate tells you how fast a market is expanding. It tells you nothing about whether your product can win in it, what it costs to serve a customer there, or whether the money you make survives contact with local logistics and tax. Sellers who expand on growth rates alone tend to end up with listings live in six countries, revenue in two, and profit in none.
The case for regional marketplaces is genuinely strong in 2026. But it is a different case than the one usually made.
What the numbers actually say
Start with the landscape, because the scale is easy to underestimate from a US or UK vantage point.
Latin America is the fastest-growing retail ecommerce market in the world, reaching $191.25 billion in 2025, up 12.2% year on year. The cross-border slice specifically grew 34% to $148 billion. Mercado Libre — the regional anchor, operating across 18 countries — reported $50.4 billion in GMV for 2025, 94 million unique buyers, and 1.68 billion items sold, with GMV in established markets growing around 35%.
Southeast Asia is projected to grow roughly 20% annually to about $234 billion in 2026. It is overwhelmingly mobile-first: around 90% of transactions happen on a smartphone. Social commerce is expected to account for roughly a fifth of all ecommerce transactions in the region this year.
The Gulf Cooperation Council markets posted a 41% increase to $31.6 billion, from a smaller base, with the UAE as the regional anchor and heavy ongoing investment in fulfilment infrastructure from platforms including Noon and Amazon UAE.
And in individual markets, regional players are not competing with Amazon so much as they have already won. Allegro holds something in the region of 95% market share in Poland. Coupang reset delivery expectations in Korea. Bol.com is the default in the Netherlands and Belgium. Rakuten commands loyalty in Japan that no foreign entrant has dented.
Why regional platforms beat global ones locally
The instinct is to treat these as smaller Amazons. They are not. They win their markets for reasons that are structural, not incidental.
Trust is the first. These are household names with a decade or more of local brand equity. In many of these markets, the regional platform is not the alternative to Amazon — it is the default, and Amazon is the alternative.
Payments are the second, and they are more decisive than most sellers expect. Mercado Pago is woven into Mercado Libre’s checkout in a way no external processor can match in Latin America. Cash on delivery still matters in parts of Southeast Asia and MENA. Card penetration assumptions that hold in Western Europe simply do not transfer.
Logistics is the third. Coupang’s Rocket Delivery, Mercado Envíos, and Allegro’s local network are built around the actual road, address, and customs realities of their regions. Cross-border shipping from a European or US warehouse cannot compete on speed or cost, which means for most categories you are looking at local fulfilment or nothing.
And behaviour differs more than the dashboards suggest. Shopee’s model is gamified, flash-deal driven, livestream-heavy — a merchandising rhythm that has almost nothing in common with Amazon’s search-and-buy pattern. A listing that performs on Amazon can be simply illegible on Shopee.
The real argument for diversifying
Here is the case that holds up better than any growth statistic.
Amazon-only is a concentration risk, and it has been getting riskier. Fee increases, fuel and logistics surcharges, rising advertising costs, and periodic algorithm changes all land on sellers with no ability to negotiate and no alternative demand channel. Every one of those changes compresses margin on a business with a single point of failure.
Diversification is partly an opportunity. It is at least equally an insurance policy. A seller with 30% of revenue on a second platform absorbs an Amazon fee hike very differently from one at 100%.
That reframing matters, because it changes the selection criteria. If you are expanding for insurance rather than for growth, you are not looking for the fastest-growing market. You are looking for the one where you can reach durable profitability soonest.
Where expansions actually fail
Four failure patterns come up repeatedly, and none of them are about demand.
Confusing GMV with profit. Contribution margin varies enormously by channel once you account for referral fees, fulfilment, returns rates, local advertising costs, and currency. A channel can grow revenue handsomely while losing money per unit. Model contribution margin before you list, not after the first quarter’s numbers arrive.
Operational fragmentation. Running inventory across platforms without unified visibility produces stranded stock in one channel and stockouts in another, plus late-shipment penalties on both. The operational complexity of a second marketplace is not double — but it is considerably more than most teams budget for.
Underestimating retail media. Every platform has its own advertising ecosystem with its own logic, and reporting in siloed dashboards makes blended profitability invisible. If you cannot see blended ROAS across channels, you cannot tell whether expansion is working.
Treating localisation as translation. VAT registration and filing, local return policy requirements, product compliance and labelling, language, and payment method support are not optional refinements. They are the entry cost. A machine-translated listing on Allegro reads exactly as foreign as it is, and Polish shoppers notice.
A more useful way to choose
Rather than starting from the map, start from your product and work backwards.
Ask where your category is genuinely under-served rather than where the market is largest. A crowded category in a fast-growing market is a worse bet than an under-served one in a slower market.
Check whether local fulfilment is available and what it costs. If you cannot fulfil locally at acceptable cost, you are competing on delivery speed you cannot deliver, which in most of these markets is disqualifying.
Model the compliance overhead honestly — VAT registration, product standards, returns obligations — as a fixed annual cost, then work out how much revenue you need to justify it. This number alone eliminates most speculative expansions, which is the point.
Then commit to one market properly rather than three tentatively. Localised listings, local payment support, local fulfilment, and a real advertising budget in one country will outperform thin presences in several, every time.
The 2026 shortlist, by region
For orientation rather than prescription:
United States — Walmart Marketplace is the clear second channel, with Walmart Fulfillment Services and Walmart Connect as the levers. TikTok Shop suits impulse-driven, lifestyle, and creator-led SKUs.
Europe — Allegro for Poland and Central Europe, Bol.com for the Netherlands and Belgium, Otto for German home and lifestyle, Zalando for fashion.
Latin America — Mercado Libre, effectively as the region’s anchor. Mobile-first listings, Mercado Pago integration, Mercado Envíos fulfilment.
Asia-Pacific — Shopee for Southeast Asia, Coupang for Korea, Rakuten for Japan.
Middle East — Noon and Amazon UAE, with the UAE as the entry point for the wider Gulf.
The takeaway
Fast-growing regional platforms matter, but not because they are growing fast. They matter because they own customer trust, payment rails, and delivery infrastructure in markets where global platforms are the visitor — and because relying on a single marketplace has become the most expensive risk in ecommerce.
The winning approach for 2026 is not presence everywhere. It is being genuinely excellent in a small number of carefully chosen places, having done the margin arithmetic before the listings go live rather than after.