Max Levchin said something on the Tim Ferriss show recently that I haven't been able to stop thinking about. He was describing the consumer lending industry, the one he spent years inside before building Affirm, and he landed on a framing that cuts right to the bone. "It's the industry where you and your service provider face each other," he said, "and you're like, hey, I want to borrow some money. They're just like, great, I'm going to bet on you failing."

Sit with that for a second, because it's stranger than it first sounds. You walk into a relationship asking for help, and the person offering it quietly profits most when you struggle. Not when you default completely, because a total loss doesn't pay. The ideal customer, in Levchin's telling, is someone who is just responsible enough to keep paying but just careless enough to be late, to revolve a balance, to miss the fine print, and to keep compounding interest and fees for years. "I make more money that way," he said, narrating the lender's logic. "Optimally, we sneak in a few things you don't notice. And it's all in a fine print, but I hope you don't read it."

I've written before about how incentives quietly author outcomes, how Charlie Munger treated "show me the incentive and I'll show you the outcome" as a theory of everything rather than a quip. But that post was about incentives in general, the way reward structures shape behavior across companies, calendars, and careers. What Levchin is pointing at is something narrower and more unsettling: an entire industry where the provider's success is wired directly to the customer's failure.

The Mechanics of Misalignment

The brilliance of consumer finance, if you can call it that, is how thoroughly it monetizes ordinary human error. Levchin gave a couple of examples that are worth slowing down on. You take a thousand-dollar cash advance, the kind a credit card markets as a convenient draw, and a couple of years later you somehow owe three thousand and can't quite reconstruct how. Or you sign up for one of those zero-percent promotional loans, the ones plastered across furniture stores and electronics checkouts, without realizing that being a single dollar short or a single minute late triggers interest that compounds retroactively, all the way back to the day the money was lent to you. The promotion was never really zero percent. It was a bet that you'd slip, and the house wrote the rules so that one slip pays for everything.

None of this is hidden, exactly. It's all in the disclosures, the terms, the fine print nobody reads because the documents are engineered to be unread. That's the part that makes it feel less like a product and more like a trap with paperwork. The penalty fees, the deferred-interest structures, the late charges, the retroactive compounding: each one is a little machine that converts a customer's misunderstanding into the lender's margin. The product isn't the loan. The product is your mistake.

Where Success Is Shared

To see how odd this is, it helps to look at industries where the incentives run the other way. A gym makes money when you keep showing up, which means, at least in theory, it wants you to get stronger and stick around. A cloud provider earns more as your applications scale, so it has every reason to want your business to grow. A software company built on subscriptions only survives if you renew, and you only renew if the product keeps delivering value, which means the company is structurally motivated to keep earning your trust month after month.

In each of those cases the arrow points the same direction for both parties. Your success is the provider's success. The relationship compounds in a good way, where value delivered turns into loyalty, which turns into revenue, which funds more value. That's the version of capitalism that actually works, the one where serving the customer well is the most profitable thing you can do.

Consumer lending inverted that arrow somewhere along the way. Levchin had a phrase for how it happened that I found genuinely haunting. "This got us into a bad part of the decision tree," he said. "It's like, what if I took a bunch of steps back into the branching point where you could have done the more consumer-friendly thing and just did that over and over and over again?" The industry didn't set out to be predatory. It just kept making locally rational choices, each one slightly more extractive than the last, until it arrived at a place where the most profitable customer is the one being quietly harmed.

The Question I Keep Asking

I think about this constantly now, partly because I'm building a company of my own. When you're designing a product, you're also designing an incentive structure whether you mean to or not, and the most important question you can ask yourself is uncomfortable in its simplicity: does my business make more money when my customers succeed, or when they fail? It's easy to wave the question away when you're heads-down on features and growth, but the answer shapes everything downstream, from the defaults you choose to the fine print you write to the kind of company you eventually become.

The honest version of building something is making sure your margin comes from value delivered, not from confusion exploited. That sounds obvious until you notice how many successful businesses quietly depend on the opposite, on the gym membership you forgot to cancel, on the subscription that's easier to keep than to escape, on the fee that triggers when you're a minute late. The whole reason Levchin built Affirm was to step back to that earlier branching point and take the consumer-friendly path instead: simple interest, no late fees, no compounding penalties, terms you can actually read. Whether or not the company perfectly lives up to that, the founding instinct is the right one. He saw the misalignment and tried to build the inverse.

So here's the diagnostic I'd offer, and it works far beyond finance. The next time you're evaluating a company, a product, an institution, or even a career path, don't start with the marketing. Start by asking where the money actually comes from, and whether the system profits when you do well or when you stumble. A bank that earns most when your balance revolves is telling you something. A platform that earns most when you can't find the cancel button is telling you something. The incentive is the truth, and as Munger understood, it will always predict the outcome more reliably than any mission statement ever could.

You can usually feel the difference, even before you can name it. The businesses that want you to win treat your success as the product. The ones betting on you to fail are hoping you never stop to ask which kind they are.