Latest / Marketing Psychology with Fexingo: Behavioral Triggers, Persuasion, and Consumer Behavior / How the Sunk Cost Fallacy Keeps You Stuck in Bad Choices
Transcript
- Lucas: You're thirty minutes into a movie you're not enjoying. Do you walk out, or do you stay because you've already spent the money? Luna: I stay. Almost every time. And I hate myself for it. Lucas: That's the sunk cost fallacy in action. We keep investing in something — time, money, effort — just because we've already invested, even when the future payoff is grim. Economists call it irrational, but we all do it. Luna: And marketers absolutely exploit it. I'm Luna. Lucas: I'm Lucas. Welcome back to Marketing Psychology. Today we're looking at one of the most stubborn biases in behavioral economics: the sunk cost fallacy. And I want to anchor it with a famous example — the Concorde. Luna: The supersonic jet that was a commercial disaster? Lucas: Exactly. The British and French governments kept pouring money into the Concorde project long after it was clear the economics didn't work. By the late 1960s, they had already spent billions. Canceling it would have meant admitting that money was wasted. So they kept going, and ultimately lost far more. Luna: The sunk cost fallacy is sometimes called the Concorde fallacy for that reason. It's such a textbook case. Lucas: Right. And the same pattern shows up in everyday marketing. Think about subscription services. You sign up for a year of a software tool you barely use. After three months, you realize it's not for you. But you think, I've already paid for the full year. So you keep it, you don't cancel, and you waste the remaining nine months of attention and money. Luna: But the rational choice is to cut your losses. The nine months of subscription fees are gone whether you use it or not. The only question is: does using it now give you any future benefit? Lucas: That's the key insight. Sunk costs are irretrievable. They should be irrelevant to future decisions. But our brains are wired to avoid realizing a loss. It feels like a failure. So we double down. Luna: And that's where marketing comes in. Brands design pricing models that deliberately trigger this bias. Lucas: Exactly. Prepayment is a huge one. Think about those annual gym memberships. The gym knows that if you pay upfront for a whole year, you're far more likely to keep showing up — even if you hate it — because you've already paid. They're banking on the sunk cost fallacy to reduce churn. Luna: And loyalty programs too. You collect points with an airline, and you're close to a reward. So you book a longer layover, you pay more, you take a worse flight — just to get that reward. But the points you've already earned are a sunk cost. You should choose the best flight for your needs. Lucas: There's a great study from the Journal of Consumer Research that looked at this. They found that people who had paid a higher price for a theater subscription were more likely to attend performances, even when they were inconvenient. The prepayment created a mental commitment that overrode their actual enjoyment. Luna: So marketers can use front-loaded pricing — make the customer pay a large upfront fee, then smaller ongoing costs. The customer feels locked in. Lucas: And it works for services where the marginal cost to the company is low. Software as a service, streaming, even some consulting retainers. The customer feels that if they don't use it, they're wasting money. So they use it more, which makes them more invested. Luna: But there's a dark side. When people realize they've been trapped by a sunk cost, they can feel manipulated. It can damage trust. Lucas: That's true. And some brands are moving away from it. I've seen more companies offer monthly subscriptions with no long-term commitment, relying on product quality to retain customers rather than lock-in. Luna: So how do we fight the sunk cost bias in our own decisions? Both as consumers and as marketers? Lucas: One technique is the 'outsider test'. Imagine a friend came to you and said, 'I've spent two years in this business partnership, but it's not working. Should I stay or leave?' You'd probably say, 'Look at the future, not the past.' But when it's your own money and time, it's much harder. Luna: So ask yourself: if I had zero history with this, would I start investing now? If the answer is no, it's time to walk away. Lucas: Another powerful tool is pre-commitment. Decide in advance what criteria would make you quit. For example, if a stock drops 20 percent from your purchase price, you'll sell. Then when the drop happens, you don't have to think about the sunk cost — you follow your rule. Luna: That's a great strategy for investors. The market is full of people who hold onto losing stocks because they can't realize the loss. They're waiting for it to 'come back' so they can break even. But that's the sunk cost fallacy talking. Lucas: And it's not just about money. Time is a sunk cost too. How many meetings have you sat through that you knew were pointless, but you stayed because you were already there? Luna: Too many. And I've noticed that the longer the meeting, the harder it is to leave. There's this escalation of commitment. Lucas: That's a related concept — escalation of commitment. It's when you increase your investment in a decision that's failing, partly because of sunk costs. It's a classic pitfall in business. Kodak, for example, kept investing in film photography long after digital was clearly the future. They had so much invested in film that they couldn't pivot. Luna: And Blockbuster with physical stores. They had the chance to buy Netflix early on, but they were committed to their brick and mortar model. Lucas: Exactly. Those are multi billion dollar examples. But the same psychology plays out in small decisions every day. Marketers who understand this can either exploit it — or help customers avoid it and build trust. Luna: I'd argue the best marketers actually help customers make better decisions, even if it means losing a sale now. For example, a SaaS company that offers a free trial — no credit card required — is saying, 'We're so confident you'll love it that we don't want to trap you.' Lucas: That's a great point. The free trial flips the script. Instead of the customer feeling a sunk cost, they feel a sense of ownership and potential loss if they don't subscribe. That's the endowment effect — another bias we've covered. But it's a much more positive framing. Luna: So the sunk cost fallacy is powerful, but it's not invincible. Awareness is the first step. Once you name it, you can start to catch yourself. Lucas: And you can design your marketing to avoid triggering regret. Because a customer who feels manipulated by a sunk cost trap is a customer who will write a bad review and never come back. Luna: Before we go further — Lucas, I just want to say, these conversations about marketing psychology are exactly the kind of thing that listeners tell us they actually use. And a couple of dollars a month is genuinely what keeps these going. Lucas: Yeah, it's true. If these episodes have sparked something you've applied at work or in your own decisions, consider supporting the show. It's ad-free, and it stays that way because of listeners like you. Luna: Head over to buy me a coffee dot com slash fexingo. Even a small contribution makes a real difference to us. Lucas: And we really appreciate it. Now, back to the sunk cost fallacy. I want to talk about how it interacts with the IKEA effect, which we covered a few episodes back. Luna: Oh, that's interesting. The IKEA effect says we overvalue things we've built ourselves. So if you've put effort into assembling a piece of furniture, you're more likely to keep it — even if it's wobbly. Lucas: Exactly. And that effort is a sunk cost. You've already spent an afternoon with an Allen wrench. So you're less likely to return that wobbly table. The IKEA effect amplifies the sunk cost fallacy by adding emotional attachment. Luna: So marketers who use co-creation — like letting customers customize a product — are essentially building a sunk cost barrier. The customer has invested time and mental energy, so they're less likely to switch brands. Lucas: Right. NikeiD, where you design your own sneakers, is a classic example. Once you've spent an hour choosing colors and materials, you're emotionally committed. It's not just a shoe you bought; it's your shoe. Luna: And that's a smart strategy, as long as the quality is good. If the shoe falls apart, the customer feels doubly betrayed — they lost money and they lost the effort they invested. Lucas: So the ethical takeaway is: use the sunk cost fallacy to build genuine loyalty, not to trap people. Create products worth sticking with. Luna: I think that's the key. The best marketing strategies work because they align with human psychology in a way that benefits both the company and the customer. When it's manipulative, it backfires. Lucas: Well said. Let's leave listeners with a practical takeaway. Next time you're deciding whether to stick with something — a subscription, a project, a relationship — ask yourself: if I were starting fresh today, would I choose this? If not, walk away. The past is gone. The future is what matters. Luna: And if you're a marketer, think about how you can reduce the pain of sunk costs for your customers. Offer flexible terms, clear refund policies, and easy cancellation. That builds trust. Lucas: Thanks for listening to Marketing Psychology. We'll be back next time with another bias that shapes how we buy. Luna: Until then, watch out for those sunk costs — and don't throw good money after bad.