For these jobs, there is no one-size-fits-all model. In general, entrepreneurship either stems from passion or from identifying viable business opportunities.
Someone with a passion for developing electronic circuits might (accidentally) produce a great device.
Such a person may not necessarily have business thoughts in mind, but pure passion drives him.
He doesn’t listen to anyone and by presenting himself, he produces a completely marketable product that has a very high yield.
He is placed in the first category of passionate entrepreneurs.
Meanwhile, a businessman with business acumen and sense of profit opportunity with a mix-n-match approach is placed in the second group.
Regardless of the origin, an entrepreneurial idea can turn into a very profitable business venture if well nurtured and properly channeled.