In general, startup world lives on hopes and ideals. More so than other industries. Founders have to have a "burning desire to change the world". It could be building a better future, moving the technology forward, making people happier, more productive, healthier, etc. Early employees are sold on hopes of changing those 10000 options into billions of dollars during the exit or the IPO in exchange of a decent salary etc. There is talk of getting paid less but "you are compressing you career of 30 years into 5", so working nights makes sense. Investors hope the company will grow a horn and hooves and become a unicorn. Etc, etc.
So it is important to have a story that interprets how startups are related to inequality. Whether we agree or not with that is a different story.