The same banks issuing high-interest credit cards offer substantially cheaper personal lines of credit to customers with identical FICO scores. Despite being a logical tool for consolidating expensive card debt, these products receive almost no marketing, making them largely invisible to consumers.

Despite a 9.1% year-over-year increase in nominal sales, Black Friday data reveals consumers bought 4.1% fewer items and dramatically increased their use of "Buy Now, Pay Later" services. This indicates that inflation, not strong consumer health, is driving top-line revenue growth for corporations.

The payment card market has a stable, recurring revenue base. Of the 4 billion new cards issued annually, most are replacements for expired or lost/stolen cards, not net new accounts. This provides a durable, predictable demand floor for manufacturers like Composecure, independent of new customer growth.

While many assume high credit card rates cover default risk, actual charge-offs on revolving balances average only 5.75%. This is a significant cost but accounts for less than a third of the typical interest rate spread, indicating that other factors like risk premiums and operating costs are major drivers.

A surprisingly large portion of high credit card APRs covers operating expenses, particularly marketing. Issuers like Amex and Capital One spend billions annually on customer acquisition. This spending is passed directly to consumers, as higher marketing budgets correlate with higher chargeable rates.

Gwen Whiting bootstrapped her company with $250k in credit card debt. She found card APRs were more favorable than the high-interest small business loans marketed to women at the time, making strategic debt rollover a viable, albeit risky, funding path.

Consumers are largely insensitive to the interest rates they are charged, rarely seeking out cheaper options like credit union cards. This behavioral pattern means that cutting rates is an ineffective customer acquisition strategy. Instead, issuers invest heavily in marketing, which proves more effective at attracting new borrowers.

Affirm's CEO argues the core flaw of credit cards is not high APRs, but a business model that profits from consumer mistakes. Lenders are incentivized by compounding interest and late fees, meaning they benefit when customers take longer to pay and stumble.

While typical banks earn a 1-1.2% return on assets (ROA), credit card-focused banks achieve ROAs of 3.5-4%. This exceptional profitability, driven by high interest rates, explains why the sector is so attractive to new entrants, as it is one of the most profitable areas in all of finance.