Many years ago, I questioned myself about what makes a software product successful and what makes it fail. In project management, I observed that even when we deliver the project within budget, scope, and time, it still may not succeed when launching into the market.
I researched and observed what is essential to make a product successful, and I found that: one of the things that impact the success of the product is a weak connection between Input, Output, and Outcome. People are quick to focus too much on Output but less likely to focus on Outcome. Developers also fail to connect the three ideas.