This also explains why so many great companies are built by people solving one of their own problems: imagine how high your demand is for a particular solution,

This also explains why so many great companies are built by people solving one of their own problems: imagine how high your demand is for a particular solution, if you are willing to spend 100 hours coding it! That means it is worth at least $1000 for you, for many programmers closer to $10,000. That is for founders who can personally code their solution. Imagine the situation for founders who can only make a proof of concept prototype and need to raise money for them to see a commercial version. In this case the desire to see their idea in physical form is so great, they would work unpaid for 1 to 2 years for a 20% chance at seeing it. That means their personal demand is $100,000 for a 20% chance to have 1. (And this is why many engineers work for equity / often called a lottery ticket.) That is another way to see that the world is drowning in demand for your product/vision :) People will donate hours or market salary to having one. (I realize that the last three paragraphs are mixed with potential financial reward - however for people coding the solution for themselves, this definitely shows that they themselves are drowning in demand for it.)