Sample frameDay 071·Strategy · Defensibility

Good morning. Your best defence isn't being better. It's being expensive to leave.

Strategy.

Switching Costs

5 min read·Apply by lunch

The question

If your sharpest competitor called your best customer this afternoon with a genuinely better product at a lower price, what — beyond goodwill — would actually stop them moving; and if the honest answer is a contract they resent rather than value they'd fight to keep, why is this quarter's effort still pointed at acquiring new customers instead of at making yourself harder to leave?

The idea

Warren Buffett gave business the moat metaphor; economists Carl Shapiro and Hal Varian wrote its engineering manual. In Information Rules (1998) they showed that in markets where products are easy to copy, the durable asset is not the product — it is lock-in: the accumulated cost a customer would bear to switch to a rival. That cost is rarely the rival's price tag. It is the retraining, the data migration, the integrations rebuilt, the trusted relationship restarted, the risk that the new thing quietly breaks in month two. When those costs are real, a competitor cannot win your customer by being slightly better; they must be better by more than the entire cost of moving — which is why mediocre incumbents outlive brilliant entrants far more often than strategy decks assume. Most people compete on being better and treat retention as a customer-service problem. And the trap has a name: the ransom. Switching costs imposed against the customer — punitive exit fees, hostage data, auto-renew traps — hold the body but lose the heart, and those customers leave loudly at the first credible exit. The switching costs that compound are the ones your customer would defend, because the cost of leaving is the value they have built.

The framework

01
Price the exit — from the customer's chair, not yours.
Sit where your customer sits and cost out what leaving you actually takes: the money (termination terms, repurchase, running two systems in parallel), the time (retraining a team, migrating data, rebuilding integrations), the accumulated assets (history, customisation, records that only work inside your product), and the risk (what might break in the first month with the new provider). Do it honestly, line by line, for your most important customer. If the total is close to zero, you are not retaining customers — you are renting them, and the lease expires the day someone better shows up.
02
Build the costs customers defend — accumulated value, not barbed wire.
Earned switching costs come from tenure being worth something: data that compounds, so a year of history makes the product materially better for that customer than day one; workflows and integrations built around you, so you are load-bearing rather than adjacent; skills your customer's team has invested in, so leaving means becoming a beginner again. Audit your product with one question — is month twelve with us worth more than month one? If usage doesn't deepen the relationship, every renewal is a fresh sale against every competitor in the market, forever.
03
Run the ransom test before you tighten anything.
For every switching cost you have or plan, ask how the customer would describe it: value they would lose, or a fee they would escape? Blocked data exports, buried cancellation flows and punitive exit clauses do produce retention on a dashboard — but it is churn deferred, paid for with reputation, and it converts your most trapped customers into your loudest detractors the day an exit appears. The confident position is the opposite: make leaving administratively easy and economically unattractive. A customer who knows the door is open, and stays, is the only kind of retention that compounds.
04
As the entrant, buy out the incumbent's switching costs.
The framework cuts both ways. When you are the attacker, being better is not enough — you must be better by more than the cost of moving, so the winning move is to absorb that cost yourself: done-for-you migration, import tools that carry the customer's history across, onboarding that retrains their team, a parallel-running period so nothing breaks, credit against the contract they are escaping. Before your next competitive pitch, write down why the prospect's current customers actually stay — not why the product is liked, but what leaving costs — and aim the offer at that number rather than at the feature list.

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