That's a legitimate tradeoff, which may or may not be worth it to everyone. But that's not even close to the situation most developers are in. Most are getting

That's a legitimate tradeoff, which may or may not be worth it to everyone. But that's not even close to the situation most developers are in. Most are getting paid somewhere around an average salary, maybe with a few probably-worthless stock options, and they're getting asked to sacrifice their personal time working for free to make founders rich. Working extra hard isn't likely to advance their career at all; it just gives them a reputation as somebody who is willing to take abuse. If you're in a situation to make a crazy good salary by working hard, by all means, do that if you want. But understand that situation is very rare. And even if you're getting that deal, the person sitting next to you might not be in the same boat. Working hard to make other people rich is a sucker's bet, akin to playing a slot machine. For a rare few, it pays off big. For a somewhat larger cohort, there's a modest payoff. For the large majority, it's just wasting their career and their time.