0.6 The Postmortem Files

Most founders fail for the same five reasons, just wearing different costumes. The details change. The core problem doesn’t.

Here’s what the evidence actually shows when you look across dozens of failure stories from founders who eventually figured it out.

You built something you couldn’t sell. Thomas built Gum Affiliates, a marketplace connecting Gumroad sellers with affiliates, and killed it fast. Not because the idea was wrong, but because he didn’t understand the Gumroad market, didn’t understand affiliate business, and had no sales plan. He didn’t know how to talk to buyers. Building without knowing your customer’s language is just an expensive way to produce something no one will pay for.

You built for the wrong audience. Anish launched Save Wise on Product Hunt and got traffic, high bounce rates, and silence. The problem wasn’t the product. It was that he was pitching to builders and makers when his real customers were somewhere else entirely. Product Hunt is a tech audience. If you’re not building for tech people, it will mislead you every time.

You skipped market validation entirely. Demitro had an email validation API idea and killed it because it “looked super boring.” He almost made the same mistake with Screenshot One before he stopped and looked at the competitors already operating in the space. Competitors aren’t a warning sign. They’re proof someone is already paying for this category. The dangerous market is the one with no competitors, because that often means no customers.

You had no monetization plan from day one. Mark Lou spent years building things people didn’t pay for, including a Tinder for sports lovers app with zero business model and zero path to revenue. He went through 30 failed startups before figuring out that wanting to build something and knowing how to make money from it are completely different skills.

You built for builders, not buyers. Rob Hallum launched five products that went nowhere before SuperX hit $13,000 MRR. The pattern across all five failures was identical: no distribution plan, no monetization from day one, and products that were vitamins instead of painkillers. Nobody pays monthly for something nice to have.

You validated with politeness, not purchases. Jack Ficks watched people say nice things about products that went nowhere. Nice feedback is not a signal. “People being willing to use non-existing products is not actual validation,” is how Demitro put it after learning the same lesson. The only real validation is someone’s credit card.

You underestimated timing. Thomas built the right product for Unid at nearly the wrong time. He’s explicit about it: pivoting a year earlier would have been a failure. The market wasn’t ready. Timing isn’t luck, it’s something you can read if you’re watching the right signals, like public social media complaints pointing at an unmet need.

The pattern across every one of these: founders skipped the hard questions at the start and paid for it in months of wasted work.

Don’t do that. Run these checks before you write another line of code.

Pre-Work Checklist: Before You Build Anything

• I can name 10 specific real people who have this problem, not “people like me” or “small businesses.”
• I have had at least 5 conversations where someone described the problem in their own words, unprompted by me.
• I know exactly where my customer spends time online and I have tested one channel to reach them already.
• There is at least one competitor in this space, which means someone is already paying for a solution.
• I have a clear answer to “why would someone pay for this instead of doing nothing?” that is not “it’s better.”
• I know the price I will charge on day one, and I have asked at least three potential customers if they would pay it.
• I can build a working version in under 30 days without a co-founder, outside funding, or a team.

Run this checklist today. If you can’t check all seven boxes, you’re not ready to build. You’re ready to do more customer discovery.