I agree with this 100% but would add that once you understand this concept, it becomes possible to prune down the space of potential ideas to ones that you can most imagine could lead to a larger scope. I realize this is often hard to see up front, but it seems more like a way to rule out short-sighted ideas completely than to decide which ones are most likely to turn into world-changing things.
It is with this lens that I was finally able to come up with an idea for a company that was actually interesting to me. Before, everything I came up with was pretty one-dimensional. I couldn't get excited about building them because I couldn't ever come up with a satisfactory answer to "What else could/should this company do?" I found it hard to find the motivation to work on something that I didn't see growth potential in. Once I landed on an idea that had room for expansion, the code, designs and ideas just started to come.
