> The problem is finding people to do it with who care enough to think rigorously about what they're going to do before they start doing it.

There is no incentive to do it. I worked that way, focused on quality and testing and none of my changes blew up in production. My manager opined that this approach is too slow and that it was ok to have minor breakages as long as they are fixed soon. When things break though, it's blame game all around. Loads of hypocrisy.