People are doing $100M+ in sales on this app (ft. Whatnot founder)

About this video

Grant Cann, founder of Whatnot, recounts building a $20 billion live marketplace from scratch in just six and a half years. Starting with a scrappy Funko Pop resale business, Cann and co-founder Logan bootstrapped their way through early product-market fit, leveraging growth hacks like viral giveaways and influencer partnerships before pivoting to live selling, which catalyzed explosive growth. The episode explores how customer-driven iteration, relentless focus on fundamental problems, and hiring for execution over pedigree enabled Whatnot to scale from 30 monthly sales to over $1 billion in GMV.

Key takeaways

• Great companies almost always start in small, niche markets with a small team that can’t compete on resources—the success comes from building an exceptional product for a specific subset of users before expanding. Grant’s insight came from analyzing eBay sales data to identify Funko Pop momentum, not from assuming a massive market existed.
• Customer-driven iteration beats visionary founder mythology; Grant deliberately built Whatnot to follow user signals rather than a predetermined vision, and was willing to pivot when data or user behavior suggested a better path. The live selling feature emerged not from ideology but from necessity and user feedback.
• Ruthless execution on unsexy growth tactics (cross-listing on other marketplaces, influencer partnerships, viral referral mechanics) beats expensive paid acquisition when you’re bootstrapped. Grant’s team also became first sellers themselves to solve the marketplace chicken-and-egg problem, authenticated inventory to add value, and built algorithms to price inventory profitably.
• Leadership scales through Socratic questioning and getting to root truth, not by hiring prestigious people or adopting corporate playbooks. Grant softens his approach as the company grows but maintains a culture where people must explain decisions simply or admit they don’t understand them.
• Speed is rarely discussed by people moving fast—if you have time to talk about moving fast, you’re probably moving too slow. Grant’s bias toward action, willingness to admit mistakes quickly, and focus on learning through doing (rather than planning) enabled rapid iteration.

Episode details: published September 21, 2026 · 96K views · 1:00:20 long. Summary written by Self Growth Videos from the episode itself. The business ideas, figures and results discussed are the hosts’ and guests’ own claims, shared as brainstorming and entertainment — not verified facts and not investment advice.

← Previous: Sam Altman’s coach destroys your limiting beliefs for 86 minutes straight · Next: “I don’t really write any code. Cursor goes and builds stuff for me."— Wade Foster, CEO of Zapier →

All My First Million videos · My First Million profile · My First Million (official site)