So yea, factories (and factory working hours) are here to stay for the foreseeable future.
Especially when the people in software aren't developing products for you because they have never met you, i.e. don't believe you exist. There are good things and bad things about the homogeneity of SV culture, and outside perspectives, especially from the working class, don't often make it past a seed round.
Makes me wonder how much of it is economic, and how much of it is social.
I'm a consultant but many clients, and especially government ones, in large enterprise IT, insist on seeing you in the office 9-to-5 (well... 8am-to-6pm really, but I digress).
While in the news and especially Hacker News, we hear more about the startup-type businesses, majority of people are employeed in big traditional corporations.
But the rest were 7-3, 12-8 or something in order to make multiple shifts fit.
It's almost always rotating 3 shifts of 8hr(days, afternoons, midnights) or 2 shifts of 12hr(days or midnights).