I believe that your assessment of startups is valid. I also think your views are true of big, multinationals as well. It seems that by the time a company gets large enough, consumers start receiving some protections, but workers, not so much.
- https://en.wikipedia.org/wiki/Foxconn#Controversies
- https://en.wikipedia.org/wiki/Hyundai_Motor_Manufacturing_Al...
etc.