It is advisable to listen to people who built startups, and understand their perspective. The importance of building something that customers want. The idea that at the begining it might be satisfying only few customers. Paul Grahm wrote many assays for founders of startups. He was involved in many such companies. I can understand that when a product is required by customers, and the product-market-fit is no longer required, there are product - management issues getting into the story.
