Behavioral Advertising Map

← Decoder · The Trap

The Trap Goal: lock-in Documented finding — Supported by a specific experimental or empirical result.

Roach motel (easy in, hard to cancel)

also: hard to cancel · subscription trap · forced continuity · cancellation maze

Signing up takes one click, but cancelling is buried behind phone trees, retention offers, and multi-step flows. The asymmetry of effort — easy in, hard out — is itself the trap: as long as leaving hurts more than staying, you stay.

Vulnerabilities it exploits

  • Status-quo bias & the default effect

    Robust evidence strength: Well-replicated or backed by strong primary evidence.

    Samuelson & Zeckhauser (1988); Johnson & Goldstein, “Do Defaults Save Lives?” Science (2003)

    People disproportionately stick with pre-selected options. The default effect is robust and economically large (e.g., organ-donation opt-in vs. opt-out), which is exactly why pre-checked boxes and opt-out defaults are so powerful.

  • Sunk-cost fallacy

    Mixed evidence strength: Cited, but of uneven or debated replication strength.

    Arkes & Blumer, “The Psychology of Sunk Cost,” Organizational Behavior and Human Decision Processes (1985)

    Prior irrecoverable investment (time, money, data) biases people toward continuing. Well-documented in lab settings; field magnitude varies. Relevant to lock-in: accumulated history inside a platform feels like a sunk cost that raises the felt price of leaving.

The evidence

What we actually know

Farrell & Klemperer (2007) Robust evidence strength: Well-replicated or backed by strong primary evidence.

“Coordination and Lock-In: Competition with Switching Costs and Network Effects”

Handbook of Industrial Organization, vol. 3

Peer-reviewed economics showing switching costs bind customers to vendors and can lock markets into early choices — the rigorous backbone for why ‘hard to leave’ works.

U.S. Federal Trade Commission (2022) Robust evidence strength: Well-replicated or backed by strong primary evidence.

“FTC v. Vonage — settlement”

FTC press release (Nov. 3, 2022)

Vonage was required to pay $100 million in refunds for junk fees and illegal cancellation hurdles; the FTC distributed payments to 389,106 consumers in October 2023.

In the wild

  • A subscription you joined online that can only be cancelled by calling during business hours and surviving multiple ‘are you sure?’ retention screens.

    FTC, ‘Bringing Dark Patterns to Light’ (2022), names hard-to-cancel subscriptions as a core tactic family.

  • FTC v. Vonage: the company was required to pay $100 million in refunds over junk fees and cancellation obstacles.

The antidotes

What helps

Evidence-backed

  • ‘Symmetry of effort’ — making cancellation as easy as sign-up — is the design remedy (sludge removal; the principle behind click-to-cancel rules).

Practical / common-sense

  • Use a virtual or single-use card so an auto-renewing subscription can be cut off at the payment layer.

Where the law stands

Different rules in different places

The rules are not the same everywhere — and they move. We show each jurisdiction separately rather than implying one global rulebook.

  • USVacated

    FTC ‘Click-to-Cancel’ / Negative Option Rule

    Vacated by the Eighth Circuit on 8 July 2025 on procedural grounds. Not currently in force, though ROSCA and FTC Act §5 still apply and the FTC has signaled renewed rulemaking.

  • USIn force

    California Automatic Renewal Law (expanded ARL)

    State auto-renewal laws still require easy cancellation for California consumers.

  • EUIn force

    Digital Services Act, Article 25

    Interfaces that materially impair a user’s ability to cancel can fall foul of the DSA.