American Express's defining moves.
The defining strategic moves at American Express — each one explained and grounded in the record.
The Money Machine · Business Model
American Express Charges Its Best Customers a Fee to Be Customers. That's the Whole Machine.
Visa taxes transactions. Amex taxes affluence — twice. It bills merchants ~1.4–3.3% to reach high spenders, then bills the spenders an annual fee that grew double-digit for 26 straight quarters and hit $8.4B in 2024.
8 min
The Money Machine · Business Model
Amex's Famous "Closed Loop" Has Been Quietly Open for Years. The Moat Was Never the Loop.
Everyone calls American Express a closed-loop network that owns every merchant and cardholder. Its own filings say otherwise: third parties run the long tail. The closed loop holds for the high-spend core - direct merchants are the minority of locations but command the lion's share of the dollars - and the real asset is the data those transactions leave behind.
8 min
The Premium Toll · Pricing
Amex Charges Merchants More So It Can Pay Cardholders More. The Loop Is the Whole Trick.
The story is that Amex skims a fatter fee out of greed. The truth is structural: Amex owns all three seats at the table, recycles the extra economics into rewards, and on $1.55 trillion of spend in 2024 the loop pays for itself.
7 min
Moat Anatomy · Competitive Moats
Amex's Moat Isn't Rich Customers. It's a Legal Shield and a Closed Loop.
Everyone says Amex's moat is its wealthy cardholders. The real floor is a closed-loop data engine and a 5-4 Supreme Court ruling. The ceiling: a fee gap that's collapsed to 1.6%, and a single airline that drives 12% of all spending.
8 min
The Moat Anatomy · Competitive Moat
Everyone Says Amex's Moat Is the Closed Loop. The Closed Loop Just Got Cloned.
In February 2025, Capital One bought Discover for $35.3 billion and acquired the very thing analysts call Amex's unique advantage — a closed-loop network. So what actually protects American Express? Not the loop. The flywheel running inside it.
8 min