I've heard that the hard-charging culture at many investment banks and law firms is similar. People work ultra long hours, because if you don't, there's always

I've heard that the hard-charging culture at many investment banks and law firms is similar. People work ultra long hours, because if you don't, there's always someone who is willing to and ready to replace you. Associates at law firms routinely have billables of 2000+ hours a year. Bankers are often in at 7am and leave at midnight. Long hours seem to be par for the course. So then, why are we any different from law firms and banks like GS? I strongly believe that this kind of toxic culture has no place in any organization. So I'm in no way condoning the culture at Uber or similar SV companies. I for one, never want to work at a place like that. I am curious though, what makes us different?