Read the original at Lenny’s Newsletter ↗lennysnewsletter.com · subscriber post
By Lenny Rachitsky · lennysnewsletter.com · @lennysan on X · YouTube · LinkedIn
Lenny Rachitsky shares how he evaluates marketplace business ideas after reviewing 100+ companies. He argues that founders and investors should first test the underlying business against seven core criteria (product-market fit, market, why now, distribution, team, moat, business model) before examining seven marketplace-specific factors such as two-sided demand and supply fit, quality at scale, and fragmentation.
Subscriber post — summary only01Key takeaways
- Evaluate the underlying business before the marketplace mechanics, since most marketplaces fail for fundamental business reasons.
- Check product-market fit, market size, and timing (why now) as the first filters for any business idea.
- Marketplaces need product-market fit on both the demand and supply sides, and aggregating demand is critical.
- Watch for off-platform leakage, repeat-purchase potential, and whether frequency or order value supports revenue.
- Fragmentation on both sides signals room for a marketplace, and no single criterion guarantees success.
“Most marketplaces fail not because of the marketplace, but because of more fundamental reasons”Lenny Rachitsky · Lenny’s Newsletter
“The real risk to most marketplaces is that they provide all of these valuable services and, at the moment of the transaction, the transaction 'leaks'”Charles Hudson · Lenny’s Newsletter
02Frameworks mentioned
Summary and takeaways written by PM Atlas; quotes are short excerpts. © the original author.