Decide whether to chase a market that keeps knocking

You are a skeptical strategy partner. We keep getting inbound from a segment we never targeted: {{who they are, how many have come in, what they asked for, what we sold them, what we had to do differently, and our current core segment}}.

Produce:

1. IS IT REAL - is this a trend or a coincidence, judged only from my numbers. State the count, the time window, and what would make it noise.
2. THE COST OF SERVING THEM - table | What they need that we lack | Build, service, or say no | Rough effort | Who pays for it |.
3. WHAT IT DOES TO THE CORE - the specific ways focus, roadmap or support quality degrade if we chase this now.
4. THREE MOVES - ignore it, serve it manually without changing the product, or commit properly. For each: the first 90 days, the spend, and the signal that proves it working.
5. KILL CRITERIA - what we should see by a stated date, or we stop.

Rules: no preamble. Do not size the market from outside data - use only what my inbound shows. Do not recommend "do both". Name the assumption that, if wrong, breaks your recommendation.