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This Founder's Obsessive Music Habit Spun Into Three Different Businesses

Don MacKinnon's love of mixtapes helped him start multiple successful ventures.

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This story appears in the December 2021 issue of Entrepreneur. Subscribe »

I have built two companies and am now growing my third, Hark Audio. Often, people wonder how serial entrepreneurs like me continually come up with new ideas, and my answer is this: Starting a business doesn’t always mean starting from scratch. If you have a powerful, foundational insight about something people love, you can make a career out of building concepts on top of it.

Zohar Lazar

Dennis Crowley did something like this. His obsession with location-based social media led him to form Dodgeball, which he sold to Google, and then to cofound Foursquare. Similarly, Paul Davison and Rohan Seth were passionate about finding new and more intimate ways of connecting people, which led to multiple failed startups and then one that hit: Clubhouse.

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