Don't Give a Shut if There's an Existing Product in the Market

All of these founders had to actually do it. And the doing at part was the hard part. They had to build good products. You can't take for granted. Be very careful about pretending that you know how big the market could be. It turns out with so many of these transformational technologies, there are use cases you can't dream of that once you build a 10x better product, other people will do.