The Stayed-Too-Long
"You keep going because you've already invested too much to stop."
People weigh past investment (money, time, effort) when deciding whether to continue, even though it shouldn't influence the next step. Surfacing that investment activates the bias.
Same hack. Three very different choices.
Surface the investment as honest context for a decision they're already making.
Use sunk-cost framing to discourage cancellation: 'You've already saved 47 recipes.'
Threaten loss of accumulated state (history, progress, social graph) to coerce continued payment.
A formula you can steal
Show [EVIDENCE OF PRIOR INVESTMENT] near [DECISION POINT] → frame the alternative as wasting it.
Where you've already seen this
- Strava's cancellation flow showing your years of activity history.
- LinkedIn premium's 'You've reached 87 connections this month' downgrade prompt.
- Mobile games surfacing your level and items at the deletion prompt.
When the prior investment is genuinely relevant to the decision (e.g., losing data, breaking integrations) and the user benefits from being reminded.
When the past investment is irrelevant to the next decision. Weaponized sunk-cost generates short-term saves and long-term resentment.
Try the trick today
Look at your cancellation flow. List every 'you'll lose...' prompt. Cut any that aren't strictly true or aren't material to the user's decision.
Free Marketing Hacked module included. See more cautionary tales and learn the playbook from the inside.