Thank you for sharing your experience but to me, the whole post is about how you didn't really listen at all and built something that people didn't want, which ended up failing, yet you still learned a ton. I bet you learned something but did this experience really teach you a LOT? You don't mention any other learning experience in this post (you say you'll write more later) but somehow in the end, this failure was super insightful. I just don't see how... Sorry if that sounds negative. I wish all entrepreneurs success but the end of this article just fell flat for me.