[Leftium]

Dane Maxwell has done this himself multiple times, and he's trained others to do it, too: https://startfromzero.com/

His method is based on focusing on the end-user and understanding them more than they understand themselves.

Your suspicion is a natural objection, and Dane can teach you how to overcome such objections.

Of course, Dane practices everything he preaches. If his marketing still leaves you suspicious, then maybe his method is not for you.