sf-isms.a field guide to san francisco slang

phrase · first recorded 2023 · status: canon

What's your moat?

1.The reflexive question under every launch: what stops a big company, a model release, or the guy asking, from doing this by Friday? Correct answers are rare. Confident answers are mandatory.

"What's your moat?" "Velocity." "That's not a moat." "Correct."

01Origin

The word is Warren Buffett's: the economic moat, the durable thing that keeps competitors out of your castle. Venture capital imported it as a diligence question, and the timeline degraded it into a genre: every launch post now has a "what's the moat?" underneath, deposited within minutes, usually by someone defending no castle of their own.

The AI boom broke the question and everyone kept asking it anyway. When a model release can replicate your feature set over a weekend (see Claude just killed X), the traditional answers all became bits: "execution" (none), "distribution" (a Twitter account), "our data flywheel" (a Postgres table), "taste" (an entire doctrine), and "the harness" (a wrapper in a suit). The question survives because it is unfalsifiable and free; the answers survive because nobody checks.

It is the sibling of "what are you building?": the first question establishes that you exist, the second establishes whether you will continue to. The only fully truthful answer ever recorded is "nothing, we're just faster," delivered quietly, off the record, at Balboa.

02Notable sightings

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04See also