My college roommate had a brother who graduated 5 years before us. He worked as a engineer designing computer chips for a year and a half. Then he said, "fukk it, I can do this better than them." He started his own company and ran it for just over three years. At that point he sold the company to one of the major chip manufacturers for $150 million.
That's $150 million just 5 years out of college on a company you started yourself with almost no experience.
He worked for them for something like 2 years (a contract stipulated in the sale), then left and started his own company again.
I ain't about chasing money at all, but some people are good at it.