There are ways to do ops which don't suck as much for the ops people -- for exempt/salaried, offering liberal comp time for taking on-call shifts, and even more if there are alerts, is pretty nice. And making sure all the tools for on-call people are as convenient as possible.

There surely is some price where being woken up is worth it to you. If it happens once a month and you get a day off the next week, I'm pretty happy.