What industry are you thinking man? I have done it and still do it to a degree but the challenge is scaling it. In the space i was doing it in, the end client gets used to you as the face of the business and like dealing with you, thereby making it hard to extract yourself and hire someone to fill that role and free up time for other projects.
Louie G has a great thread on here somewhere about making a digital agency where he was basically the middleman but had more responsibilities which is a good primer. I think YMG had one too way back when about selling mobile-optimized webpages to small local businesses and outsourcing the development.
It is a good exercise to build up experience/skills on how to sell and negotiate. And once you learn those fundamentals you can basically become the middleman for all kinds of things and create various income streams from them.
Louie G has a great thread on here somewhere about making a digital agency where he was basically the middleman but had more responsibilities which is a good primer. I think YMG had one too way back when about selling mobile-optimized webpages to small local businesses and outsourcing the development.
It is a good exercise to build up experience/skills on how to sell and negotiate. And once you learn those fundamentals you can basically become the middleman for all kinds of things and create various income streams from them.