A lot of billion dollar company ideas are simple too like Facebook, Salesforce and Yelp. But I doubt 1 person can build those. Those BuiltWith folks probably h

A lot of billion dollar company ideas are simple too like Facebook, Salesforce and Yelp. But I doubt 1 person can build those. Those BuiltWith folks probably have hundreds of regression tests running daily. Maybe a bunch of freelancers who check for newer versions of software too every month.