Killer-pattern catalog · public

The ten ways ideas die.

A guide to the most common reasons startup ideas die. Real anonymized examples. Counter-examples for the rare ones that survive.

ChatGPT replaces it

K8 · §3.7.0 · Foundation model coverage

A product whose core job can be done by a broad AI model through a short prompt and a normal textbox. The product is not selling intelligence if the same answer is already available inside ChatGPT, Claude, Gemini, or another general model. Without proprietary data, workflow ownership, or distribution, the wrapper has little margin and no defense.

Signs your idea has this

  • 01The core feature is text in, rewritten or summarized text out.
  • 02A generic model completes most of the job with a short prompt.
  • 03No proprietary data improves the output.
  • 04There is no workflow integration beyond a textbox and export button.
  • 05Pricing competes directly with broad AI subscriptions.
  • 06The pitch starts with AI for a broad role or generic task.
  • 07Users can reproduce the result in a general chat interface quickly.

Public idea database

No public examples yet. The idea database is still small, and we are not making one up.

Rare survivors

Cursor

Survived by owning the coding workspace and using the model behind real developer context.

Harvey

Survived through legal workflows, regulated buyer needs, and process integration beyond raw model output.

Why this pattern exists fundamentally

Foundation models make basic generation and reasoning cheap and widely available. Durable products own the workflow surface, proprietary context, compliance layer, or distribution channel. A thin AI wrapper sits on someone else’s model and can be copied or bundled quickly.

Related patterns

Got an idea that looks different? Run the same framework before building.

Check whether a generic model replaces it