I hope others on HN have had the opportunity to work in places such as these...
I'm sure this varies a lot for people working in different sectors, but I think every sector has seen the perceived importance of technology engineering increase over time.
they do it because they can. Engineers have the tendency to be overly individualistic and ignore collective bargaining which is the primary means by which people can gain better working conditions. As long as people are willing to put in those 60 hours to climb up the next career rank ahead of their peers it's gonna be that way.
One of my goals in life is to get better at identifying (read, admitting/accepting) when the team has defectors and finding someplace else to apply my skills. But the few times it has actually worked are a mighty incentive to try again, even when I should know better.