CS degrees didn't really exist in their current form when I went to college in the 80s. I got a math degree but spent a number of years as a musician and carpenter after school. In 1995 I got an entry level (as in, mailroom and phones) job in a tech-related field and within a year was being paid to learn to how to program. That ended up being a ridiculously great job and I've been a computer programmer ever since.
My current business partner is the classic stereotype of a hacker, dropped out of college in the 90s, did a bunch of quasi-legal startup and open source stuff, got rich and got out right at the fattest part of the bubble.
So neither of us came from a traditional CS background but we were both in the right place at the right time.