Most startups don’t fail because the product is bad. They fail because the business model breaks when growth begins.

In this episode, Mike Parsons walks through ProductBooks — Business Model Fit Evaluator, the third stage in the Fit Model series of free evaluators. It’s designed for founders who already have problem–solution fit and product–market fit, and now need to answer the harder question: do we actually have a viable, scalable business?

Using a real-world example and mock data, Mike shows how the free GPT evaluates unit economics, sustained growth, and capital runway. You’ll see how the tool surfaces risk factors early, highlights where margins and cost structures may be misaligned, and provides practical next steps to strengthen business model fit before scaling pressure exposes the cracks.

👉 https://chatgpt.com/g/g-69619faaf9108191a6ea2517cf199f0a-productbooks-business-model-fit-evaluator
→ Open in ChatGPT and run your own Business Model Fit evaluation.

🎥 Watch on YouTube
https://youtu.be/5uyeL3ZY8rs

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