2. Compensation: The RSUs are real money, FANGs pay the best in the industry.
3. Job Security: FANGs have large cash reserves. There's lower likelihood of a FANG going under compared to an up and coming unicorn
4. Brand : Having a FANG on a resume helps you find jobs and possibly get investments. Notice how companies advertise as "We have engineers from Google, Facebook and Netflix" in their job posts
5. Perks like amazing health insurance, 401k match, free food etc
6. Mentorship: A FANG is likely to have more senior engineers, with experience. A startup is more likely to have younger folks. There's a lot to learn from people with experience in the industry.