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MERCANTILE ACQUIRED BY ONBOARD PARTNERS · DEC 30, 2024IN CONVERSATION · SAASPASSE EP. 130 · APR 2025FROM MONTREAL · A FOUNDER’S EDUCATION IN TIMING

People / Founders / The timing question

Samuel F. Poirier and the art of arriving on time

He started with minerals, moved into Bitcoin and virtual reality, then built Mercantile around the spending power of small businesses. Along the way, Samuel F. Poirier learned to ask a less glamorous question: is the market ready?

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Samuel F. Poirier ran into a problem that ambition could not solve. His virtual reality company could work harder, build faster and explain itself more patiently. It could not make the world manufacture more headsets. In 2016, while running Retinad, he was already describing the frustration of pushing against a market whose speed he did not control. For a young founder, this was an inconvenient discovery. Effort was supposed to be the adjustable part of the equation.

The company helped developers understand what people did inside virtual worlds. Its opportunity depended on people entering those worlds in the first place. That distinction would follow Poirier into other businesses, eventually taking him from an emerging technology to something most business owners already carried: a credit card.

By October 2022, he was co-founder and CEO of Mercantile, which publicly launched with approximately $22 million in funding. By December 2024, Onboard Partners had acquired it. Between those dates sat a proposition with considerably less science fiction attached: small businesses could get more useful financial products if someone organized them around the industries they belonged to.

The route there had included imported minerals, a Bitcoin debit card and online cruise booking. It reads like a portfolio assembled by someone who refuses to pick a hobby. Look more closely, though, and a question emerges: how much of a company’s future should depend on persuading the rest of the world to catch up?

Fourteen, with something to sell

At fourteen, Poirier was importing minerals from several countries into Montreal. The teenager had found a business in a personal interest. Gemstones were among his childhood enthusiasms; so were Venus flytraps and the possibilities of outer space. A collection had become a reason to deal with suppliers and buyers. The merchandise had the useful property of actually existing.

His next venture moved into Bitcoin. Yagi sought to connect digital currency with everyday purchases through a debit card. He was still a teenager. Later accounts differ on his precise age at particular milestones, but agree on the early start and the attempt to make cryptocurrency spendable outside its own small world.

Yagi merged with Mt. Gox, the Bitcoin exchange. When the exchange collapsed, the arrangement unraveled. Poirier later recalled the silence from partners who had stopped answering messages. Distribution had looked like the solution; reliance on that distributor had become a vulnerability. The episode left him looking for another business to build.

It is tempting to make this sort of chronology sound inevitable. A young entrepreneur fails, learns a lesson, proceeds to the next chapter. Living through it is less tidy. A partner that makes a business possible can also determine its fate. That problem would matter again when Poirier began thinking about how products reach their customers.

A fellowship, and a ceiling

Retinad brought him into virtual reality analytics. Its software mapped attention through gaze heat maps and analyzed how users moved their heads inside experiences. Developers could use the resulting patterns to understand how their work was being encountered. Advertisers were interested too. In a new medium, even knowing where an audience looked was a business.

In June 2016, Poirier became a Thiel Fellow, identified at the time as the first French Canadian selected. The fellowship offered $100,000 and a network of entrepreneurs. He valued access to that network especially highly. A founder trying to explain an unfamiliar product had acquired a circle of people accustomed to unfamiliar products.

He had already started companies before receiving that recognition. The fellowship therefore arrived in the middle of an entrepreneurial education rather than at its beginning. It gave public weight to a path he was already taking, including the decision to leave university and concentrate on building.

Yet a fellowship could not fix the headset supply problem. Retinad’s ambitions still ran into the rate at which its market developed. Poirier discussed failure with unusual directness for someone receiving an award. He could recognize the opportunity and still acknowledge the limits of his own ability to accelerate it. The lesson was awkward precisely because the technology could be promising.

By 2018, Retinad had been acquired by LumiereVR. Poirier was moving toward a different kind of opportunity: applying newer tools to an established activity. People already booked cruises. They did not need to be persuaded to discover the ocean before he could sell them software.

Samuel F. Poirier pictured above Montreal in a photograph published in 2016
Montreal, 2016. A fellowship opens doors; the market keeps its own hours. Photograph published by BetaKit.

The ocean was already there

At Seahub, Poirier led an online cruise-booking business. The work involved making an old purchasing process easier to navigate. A customer still needed to compare trips, understand options and complete a booking. The technological ambition lay in making those steps work better.

Netguru, which worked on the project’s design, describes two designers collaborating with Seahub’s internal developers. The system reached the market in less than six months and offered more than 16,000 cruise options. Those are useful details because they turn the abstract phrase “modernizing an industry” into actual work: interfaces, choices and a way to transact.

Poirier’s testimonial for the project contains a small admission. He generally preferred hiring internally, but the collaboration had changed his view of outside designers. Even a founder with strong preferences could be persuaded by an arrangement that worked. The willingness to revise a method would become a recurring part of his business thinking.

His career also included Cruisehub, where he was co-founder and CEO before Mercantile. Cruise booking put him closer to an existing market, with existing demand and its own economic constraints. Finding demand already in place did not remove the difficulty of building a company. It changed which difficulties had to be solved.

A card with a way into the room

Mercantile brought together Poirier, François-Xavier Lemire and Luke Finney. Their backgrounds connected them to small-business communities, and their roles combined leadership, technology and commercial experience. The company’s approach was to partner with organizations that already served particular industries, then offer customized business credit cards through those relationships.

An association already has something a new financial product needs: a group of potential customers with interests in common. A supplier has a different need: reaching those customers efficiently. A business owner wants purchases to cost less and membership to earn its keep. Mercantile placed a card program among those interests.

That structure made distribution part of the product. Instead of approaching every small business as a separate stranger, the company could work with an organization those businesses already knew. Industry-specific rewards and collective purchasing were intended to make the card more relevant than a generic offer. The association’s role extended beyond putting its name on the plastic.

At the public launch on October 12, 2022, the financing included a $15 million Series A led by Index Ventures. First Round Capital, General Catalyst, SV Angel, Operator Partners and BoxGroup were among the other backers identified. The announced plans included product development and expanding partnership and go-to-market teams.

Poirier described the objective in terms of helping small businesses compete with larger rivals. The proposed advantage came from bringing smaller buyers together. One business has its own spending; an industry network has a different negotiating position. That is a practical distinction for a founder who had already experienced the limits of working alone against a market’s timetable.

Mercantile’s three co-founders, with Samuel Poirier in the center
Three founders, one shared bet on small business. Poirier, center, with Mercantile’s founding team. Photograph: Index Ventures.
$22mTotal funding at the 2022 public launch
2024Acquisition announced December 30

The attraction of an older partner

On December 30, 2024, Onboard Partners announced that it had completed its acquisition of Mercantile. The buyer, formerly the Kessler Group, brought more than forty years of experience in financial services and affinity credit cards. Mercantile brought its platform and association relationships.

The combination had a certain historical neatness. Poirier’s earlier ventures had tried to participate in new markets. Mercantile joined a company with roots in the affinity-card business stretching back to the early 1980s. There was already a history to work with, along with people who knew how such partnerships operated.

Poirier expressed pride in the technology and partnerships the team had built. His stated ambition was to reach tens of thousands more small businesses. That remained an aspiration, rather than an achieved customer count. The acquisition gave the company a new owner; the useful test of its premise would still happen in the businesses using its cards.

In an April 2025 conversation, he described Mercantile before the acquisition as a team of roughly thirty people, split across Canada and the United States. The episode also put annual transaction volume at approximately $100 million. Those figures describe the business around that period, rather than a running scoreboard.

A checklist for the next temptation

Poirier has also made his approach to selecting businesses unusually concrete. His public “Opportunity Filters” document lays out twenty-five considerations spanning market economics and operating strategy. It asks whether a company can retain the value it creates, whether its cash cycle is workable and whether its founder is suited to the daily task.

“Observe, don’t ideate.”Samuel F. Poirier, Opportunity Filters

One instruction is compact enough to keep beside a laptop: “Observe, don’t ideate.” The document recommends looking for existing inefficiencies before imposing an invention on the world. Another test asks founders to double their estimated costs and halve their estimated income. A spreadsheet capable of surviving that treatment has earned another conversation.

The list favors recurring revenue, pricing power and a small initial niche with room to expand. It warns about seasonal sales patterns and experiments that make too many bets at once. These are the concerns of someone assessing how a business behaves on an ordinary working day, after the announcement has disappeared from everyone’s feed.

Alongside that discipline sits a wider curiosity. His interviews have covered mentorship, space exploration and the Fermi paradox. By 2024, he was discussing strategic fit and pricing power on Founder Friday; in 2025, the conversation extended to biographies, business culture and changing one’s mind. The interests had broadened without making the commercial questions disappear.

The mineral importer had learned to work with tangible goods. The Bitcoin founder had encountered dependence on a partner. The VR founder had watched the market set the pace. At Mercantile, Poirier put his effort into a purchasing habit and a network that already existed. His career gives timing a less romantic meaning: understanding what is ready to work, then doing the work.

Keep the conversation going

Read and listen to Poirier in his own words.

Samuel on LinkedIn ↗Mercantile ↗Watch: SaaSpasse, episode 130 (French) ↗Read: Opportunity Filters ↗The 2018 Terminal interview ↗Listen: Founder Friday / the talktank ↗Mercantile acquisition announcement ↗