If you are a dev/eng/cs guy you'll land fast anywhere, non-dev startup work (marketing/PR/social/sales/support/fundraising) will require a lot of explaining and time. You'll get there.
For me, it's just a matter of what's more cost efficient. Statistically it's easier to get a job than funding. Very little of funding ends up in founders' pockets anyway.
Salaries and openings for developers have gone way up lately. Entrepreneurs need to chase the best opportunity and timing.
Also inevitably, you come across competition. Ideally you become best friends with your competitors. Because statistically, fail rate is high.
The best employee is very often someone who can build/sell something very effectively. The best employer is someone who views you as an equal, works on your vision, and admires your strengths. So competitors are often a perfect match.