In a path-driven business, each experience that a user — especially a first-time user — encounters is designed with the singular purpose of pushing a user to the next experience and perhaps collecting some information along the way. In the case of web businesses, each “experience” is a page. To generalize, a path is deterministic in nature; a subject’s destination on any particular page has been determined by the page’s design.
I’m not arguing against design. But good design is hard, and design outside of the constraints of a deterministic path is really freaking hard. And if you’re a founder of an early-stage company, your job is already hard enough.