I think what makes those work is being part of a small team. It's not so much that if Bob releases bad code you can go over and punch Bob, as that no-one wants

I think what makes those work is being part of a small team. It's not so much that if Bob releases bad code you can go over and punch Bob, as that no-one wants to be responsible for waking their teammates up in the night to start with. Another case of: can be done properly is a good work environment, and can be literal death when done badly.