At most startups (with illiquid equity), TC adjusted for cost of living (assuming Bay Area) is probably not far from median American household. Employers take advantage of youthful zeal which prevents ICs from understanding their true worth to the business. After startup engineers reach the point where 12 hours days become unacceptable from a logistics standpoint (kids, burnout), what do they have to show other than enriching their founders? If they enjoy programming and would do it in their spare time, why not dedicate 8 hours towards their job and 4 hours towards a personal project with potentially much higher personal reward?