https://techcrunch.com/2021/03/19/timing-your-bootstrap-with-calendlys-tope-awotona-and-openviews-blake-bartlett-at-tc-early-stage/

Once the path less traveled, bootstrapping today has become a much more viable and common approach to building a startup. By not taking venture capital dollars early, bootstrapping can force founders to remain disciplined in serving their paying customers well. It’s also a pretty compelling way to minimize dilution for founders and early employees. No wonder then that a crop of unicorn enterprise startups has taken this road these past years.

Few companies in that emerging crop though have reached quite the stature of Atlanta-based Calendly. The company is not just on everyone’s calendars (literally), but has also become a $3 billion unicorn behemoth with $70 million in subscription revenue in 2020.