How do you make money?
I started or was a very early employee at 4 start-ups from 1995 through 2017. I almost always invested my own money (whatever little I had given student loans) and got equity to join a start-up. Along side of equity, I had to sacrifice on salary as that is the general trade offs relative to corporate jobs. If you are good and lucky, when these companies go public or get bought, the equity could be worth something. After my tour of duty working at start-ups, I now invest in start-ups and advise them. I see a lot more different businesses this way, but it makes it easier to invest across different sectors.