Why these mistakes matter
This page covers two-sided platforms matching buyers and sellers of goods, services or work, including those using AI for matching and trust.
Most rounds do not fail on one big problem. They stall because an investor finds something the founder should have fixed or explained earlier, and confidence drops. Each mistake below says why it happens, how investors tend to react and what to do instead.
Mistake 1: Launching nationwide before a niche works
Why it happens: Big launches seem to prove ambition.
How investors react: Investors see thin liquidity everywhere and strong liquidity nowhere.
What to do instead: Win one category or location first and show how often listings sell there.
Mistake 2: Presenting sales volume as revenue
Why it happens: Gross value looks far larger than take.
How investors react: Investors notice and question the founder's honesty.
What to do instead: Report gross value and net revenue separately, with take rate clearly shown.
Mistake 3: Ignoring leakage
Why it happens: Deals leaving the platform are hard to measure.
How investors react: Investors worry the platform is only used for introductions.
What to do instead: Estimate leakage and show features that make staying on the platform worthwhile.
Mistake 4: Subsidising growth
Why it happens: Discounts bring both sides in fast.
How investors react: Investors ask what happens when subsidies stop.
What to do instead: Show unsubsidised cohorts and how retention holds without incentives.
Mistake 5: Neglecting trust and safety
Why it happens: Early volumes are small.
How investors react: One bad incident can damage both sides of the market.
What to do instead: Build verification, reviews and dispute handling in step with growth.
Mistake 6: Raising on one side's growth
Why it happens: Supply is easier to sign than demand.
How investors react: Investors want balanced liquidity, not a list of idle sellers.
What to do instead: Report match rate and time to first transaction for both sides.
Mistakes every sector shares
Alongside the sector-specific points, these general errors come up in almost every round:
- Raising without a clear milestone the money is meant to reach.
- A messy cap table or missing IP assignments found late in diligence.
- Pitching investors who do not back your sector or stage.
- Starting to raise with too little runway left to negotiate calmly.
Marketplaces: common mistake versus better approach
| Mistake | Better approach |
|---|---|
| Launching nationwide before a niche works | Win one category or location first and show how often listings sell there. |
| Presenting sales volume as revenue | Report gross value and net revenue separately, with take rate clearly shown. |
| Ignoring leakage | Estimate leakage and show features that make staying on the platform worthwhile. |
| Subsidising growth | Show unsubsidised cohorts and how retention holds without incentives. |
| Neglecting trust and safety | Build verification, reviews and dispute handling in step with growth. |
| Raising on one side's growth | Report match rate and time to first transaction for both sides. |
Questions to prepare before you pitch
- In which niche do most of our listings actually sell?
- What is our real take rate?
- How much activity leaks off the platform?
- How do cohorts behave without subsidies?
How KJ Enterprises evaluates marketplaces businesses
KJ Enterprises assesses marketplaces on liquidity in a defined niche, honest take-rate reporting and growth that holds without subsidies.
If that describes your company, you can apply for investment. Related reading: the complete funding guide and the step-by-step how-to and costs and terms and the readiness checklist and ecommerce mistakes to avoid.