I would say of the significant number of tradesmen I've met that owned their own business, practically all worked for someone else. Thats how you acquire the skills to start your own business. I paid two guys to spackle and paint a bathroom, install a vanity and new fixtures. They were the "no experience, but lets start a business" guys you don't want to meet. 2/3 way thru, I stopped them, paid them, gave them one piece of advice - "get a mentor to work FOR". I finished the job myself.