Within a few weeks this spring, three companies that spent a decade fighting over the same customer got three different endings. Brex sold itself to Capital One at almost 60 percent below its peak. Ramp raised at a $44 billion valuation. Mercury won conditional approval to become a bank.

The customer was the venture-backed startup that American banks would not serve. In the late 2010s, Brex issued the cards, Mercury opened the accounts, Ramp managed the spend. Each got in by solving a real problem, and by the end of 2020 all three had earned a wedge with the same customer base. Same starting line, three endings. The difference was what each company decided to do with the ground it had won.

Brex moved first, and fell furthest. In 2017, a newly funded startup could not get a corporate card, because banks underwrote the personal credit of founders whose companies were too young to have any. Brex issued corporate cards to startups that banks would not underwrite, secured against the company's cash and its investors instead, with no personal guarantee.

It became the default card of the venture world almost overnight. By late 2021 it was valued at $12.3 billion.

Then it walked away from its wedge. In 2022 it concluded that smaller, non-venture-backed businesses were not worth serving and pushed tens of thousands of customers off the platform to chase enterprise accounts. The logic looked clean on a spreadsheet and was brutal in the market. Those customers needed somewhere to go, and the obvious homes were Mercury for banking and Ramp for cards. Brex handed its two closest competitors momentum for free.

Selling a corporate card to a large enterprise means fighting American Express and the big banks on territory they own and defend with balance sheets a startup cannot match. Brex added marquee names like Anthropic and Robinhood and kept shipping good automation, but the growth story was gone, and turning cash-flow positive in late 2025 did not bring it back. In April, Capital One closed its purchase of Brex for $5.15 billion, almost 60 percent below that $12.3 billion peak.

My read is that the 2022 offboarding decided everything. Inside Brex it must have looked like focus, the classic move up-market. From the outside it was drift: Brex swapped a market where it set the terms for one where American Express sets them, and it financed its competitors' growth with its own castoffs. Moving up-market is only discipline when the ground you are leaving is worthless. Brex's was not.

Ramp shows what staying looks like. It arrived in 2020 with the least obvious problem of the three: corporate cards were built to make companies spend more, rewarding volume with points. Ramp built a card and expense software designed to make companies spend less, and it sold first to the same venture-backed startups the other two had already won.

The card was the entry, but the real asset was the moment money leaves the company, and Ramp built the sharpest spend-management layer in the category around it. Every dollar of savings runs through Ramp, now wrapped in an AI-automation story. By its own numbers, it has crossed $1 billion in annualized revenue and powers more than $200 billion in annualized purchase volume, and in June it raised at a $44 billion valuation, nearly triple where it stood a year earlier.

It owns the spend decision, and the spend decision turned out to be a very good thing to own.

Mercury took the least glamorous wedge of the three. Opening a business bank account in 2019 meant weeks of waiting and a walk into a branch, and for a remote or foreign-born founder it often meant a rejection. Mercury made it a same-day online signup, and in doing so claimed the operating account: the account a company opens on day one, with everything running through it, deposits, payroll, bills, cash.

Once that account is set up, the cost of moving it outweighs any competitor's offer, so the base rarely churns. Deposits compound and revenue follows them.

In April, the OCC, the federal regulator that charters national banks, gave Mercury conditional approval to become a bank. A month later Mercury raised at a $5.2 billion valuation, up 49 percent in fourteen months, reporting more than 300,000 customers, $20 billion in deposits, $650 million in annualized revenue, and four straight years of profitability.

What Mercury shares with Ramp is the thing Brex gave up: a wedge customers touch every day and almost never leave. Ramp sits inside every payment approval, Mercury inside every payroll run and wire. The moat is the churn that never happens.

For anyone underwriting US business banking from here, the test these three endings suggest is whether a company solved a real problem to get in, and whether it has the discipline to go deeper into that ground than anyone else will. All three products are good. Product quality decided nothing this spring.

Ramp went deep on how companies spend. Mercury went deep on where their money lives. Brex chased a bigger market and was acquired by a bank for less than half of what it was once worth. Depth compounds. Drift got sold. 

Bashar Aboudaoud
Managing Member, UpRound