Imagine if the only videos on YouTube were people looking for love. That could have been the world we lived in! Before it had 1.9 billion users per day, YouTube started as a video-based dating service, complete with the truly excellent catchphrase: “Tune in, Hook Up.”

The reason they didn’t flop is because they were willing to listen and fundamentally change their business when their original idea didn’t meet the needs of their market. They were clever observers and nimble enough to pivot.