Brex and Ramp Target Amex

The real prize is not winning the startup card niche, it is replacing Amex as the default operating system for business spend. Brex and Ramp start with a corporate card, but the larger move is into approvals, bill pay, reimbursements, travel, and accounting sync, where finance teams log in every week and where software revenue is stickier than card rewards. Amex still has vastly more volume and revenue, which is why taking share from it matters far more than swapping customers with each other.

• Brex and Ramp both learned that the card itself is easy to copy. The durable wedge is the workflow around the payment, who requested it, who approved it, how policy is enforced, and how it lands in the ERP. That is the layer that lets them displace Concur, Bill.com, and Expensify, not just legacy card issuers.
  2 sacra 3 sacra 4 sacra
• Amex is the incumbent worth targeting because it is enormous. American Express reported $60.5B of revenue in 2023 and $67.4B in billed business in Q4 2024 annualized to about $1.68T. Against that base, even a combined Brex and Ramp is still small, which leaves room for both to grow without needing the other to lose.
  5 americanexpress 6 americanexpress 7 americanexpress
• The market is shifting from interchange to software. By early 2024, Ramp had reached about $30B in TPV by expanding from cards into bill pay, while Brex was adding deposits and enterprise software. That shows the category moving from free cards and cashback into multiproduct finance platforms that can grow with larger customers.
  2 sacra 4 sacra 8 sacra

From here, the winners in corporate spend will look less like card issuers and more like finance infrastructure platforms. As more budget control, procurement, travel, and payments move into one system, the company that owns the daily finance workflow will keep pulling share from Amex and from the older point solutions around it.