So this isn't a 6 days a week x 10 hours in a job working through a promotion path. I'm unsure why you brought that up as a point before, it doesn't align to what you further exposed here.
Another point:
> You can try to regulate day(s), but if there’s people willing to work more they’ll set the standard.
Society will set the standard, not the ones who work more, society as a whole sets that. I'm originally from a society where working grueling 10-12 hours/day in an office is expected, the society I live now sees that as a major issue.