So find another job or another career. I'm not being mean: there are still jobs that are 40 hours per week. If those jobs don't appeal to you, switch careers and find a work-life balance that does.
People get exploited because they don't act on their other options. I work 40 hours a week.
I was just pointing out a trend. It seems that more and more companies are trying to appeal to the start-up types. I'm not too optimistic that these big-corp-in-start-up-mode ideas will work, most people are not up to the task. I view this kind of mode as an exception not the norm.
Personally I don't mind working hard. In my case the work has been interesting enough and I'm viewing the long hours as an investment to acquire certain technology experience. At the same time I do feel an increasing urge to go and start working for real start-ups again.
People get exploited because they don't act on their other options. I work 40 hours a week.