This is why I get so grumpy about startup narratives. If you ask successful unicorns how they got started, they'll usually explain that's exactly what they did. Garrett Camp was just trying to hire a private driver, and realized it was too hard, there's no reason it should be so hard. Jack Dorsey saw a guy who didn't accept credit cards and realized it would be great if he could accept credit cards.
If you don't realize what's going on, that companies pick their founding myth based on which story sells the best rather than which story occurred on the earliest calendar date, it's very easy to get a false picture of how good startup ideas originate.
If you don't realize what's going on, that companies pick their founding myth based on which story sells the best rather than which story occurred on the earliest calendar date, it's very easy to get a false picture of how good startup ideas originate.