We don't work 50-60 hour weeks at software companies because we'll die of starvation or exposure otherwise, we work that much because the finance trade our work supports allows us to live in a 2-story houses in the first world without knowing anything about construction, defense, farming, etc. The real work [1] gets handled by other people who make less money than us. But we still have to work so the lending institutions can make the debt contracts balance correctly.
[1] Yes, some of us do actually work on real projects, with real consequences to downtime, I understand. But how many brilliant engineers work for F+N or Spotify or whatever that could work on domestic engineering projects instead? Would they still have to work 60 hour weeks? Is such a project even possible without involving lending institutions, and the second those institutions are involved, doesn't that put us right back at the "justify the global finance infrastructure"?