If I've got a wicked sharp pairing knife and I cut my finger while peeling something with it then I'll be more careful, but chances are that as the pain fades I'll relax - maybe I'll always be careful with that particular knife but when I get a new pairing knife the memory will be detached.
Boeing needs more than the vague memory of bad PR and low profits for a quarter or two to learn this was unacceptable - and the American legal system is unable to apply a lesson, while the general business culture refuses to learn the lesson.
That they should in no way proves that they do. Computer programmers build all sorts of foot-guns with the idea that they'll be clever enough to avoid them in the future. I expect pilots are a little more humble and self-aware than that, but they're still human.
I think the problem is that they trust a system that got corrupted or never was that robust in the first place.
Seeing how this thing unfolded, I don't really believe that people making claims are in good authority to make those claims.