I Only Back Founders Who've Sold Something Before Age 25

This isn't a formal rule in my investment thesis. I don't have a checkbox on my evaluation sheet. But when I look back at my best-performing portfolio companies through Wonghaus Ventures, there's a pattern so consistent that I've started using it as a filter: the founders who built breakout companies almost always had some version of selling experience before they turned 25.

Not corporate sales experience. Not "I was an SDR at a SaaS company." I mean they personally figured out how to get a stranger to give them money in exchange for something. A Shopify store in college. Flipping sneakers in high school. A lawn care business at 14. Selling art prints on Etsy. The specific thing doesn't matter at all. What matters is the muscle they built by doing it.

Selling something to a stranger with no brand recognition, no marketing budget, and no leverage teaches you things that can't be learned any other way.

It teaches you that nobody cares about your product until you make them care. This sounds obvious but a shocking number of first-time founders — especially ones coming from tech or finance backgrounds — operate with this baseline assumption that if the product is good, people will find it. That's not how anything works in consumer. You have to earn every single eyeball, and the founders who learned that lesson at 19 with a Depop store don't need to relearn it at 28 with a $2M seed round.

It teaches you pricing. Not theoretical pricing from a strategy framework. Real pricing — what happens when you charge $30 and nobody buys, so you drop to $22 and suddenly you're fulfilling orders. That visceral feedback loop between price and demand is something you carry forever once you've felt it. Every founder in my portfolio who has strong pricing instincts — and pricing is one of the highest-leverage decisions in consumer — earned those instincts through early selling experience.

It teaches you that customers are real people, not personas. When you're personally packing boxes and reading DMs from the people who bought your thing, you develop an intuition for what customers actually want versus what they say they want. You learn to read between the lines of a review. You notice patterns in complaints that point to fixable problems. That intimacy with the customer is rare in founders who went from business school to a startup without ever having personally fulfilled an order.

The other thing early selling experience reveals is tolerance for the unglamorous parts of building a business. Every founder romanticizes the vision, the product, the brand. The ones who've actually sold something know that 80% of the work is logistics, customer service, inventory management, and solving problems that aren't interesting. They've already made peace with that. The founders who haven't sold anything before their current company often hit a wall about 6-12 months in when they realize that running a brand is mostly operations, not creativity.

I'm not saying experience is the only thing that matters. Some of the smartest founders I know started their first real business in their 30s. But when I'm evaluating someone in their mid-20s raising a pre-seed or seed for a consumer brand, and they've never sold anything before — I get cautious. Because the learning curve for someone who's never personally dealt with a customer, never managed inventory, never experienced a product return is steep. And they're proposing to learn all of that on my dollar.

My own experience shaped this bias. I started selling things online when I was still in school. Meme Bibles, print-on-demand products, random internet commerce. None of it was sophisticated. But by the time I launched Doe Lashes, I already knew how to find customers, how to price a product, how to run a Shopify store, how to handle the thousand small operational decisions that happen every day. That head start was worth more than any amount of market research or business planning.

The founders I've backed who had the hardest time scaling are almost always the ones who were excellent at the strategic and creative parts of the business but had never done the work of selling. They'd build a beautiful brand, raise money, launch with incredible creative — and then struggle to convert. Not because the product was bad, but because they didn't have the instinct for what makes someone actually pull out their credit card. That instinct comes from repetition, and repetition comes from starting early.

When a founder tells me they sold custom phone cases on Instagram in 2019 and made $50K before the account got banned, that tells me more than their MBA. When someone says they ran a vintage clothing resale business out of their apartment for two years, I know they understand unit economics in their bones. These aren't the stories founders lead with in pitch decks. But they're the stories I dig for, because they're the best predictor I've found of who can actually build a business that works.