Interesting question.
First preventive action is not all that common (too many people adhere to old saying “if it ain’t broke, don’t fix it” or they have so many actual problems that preventing new ones is not possible with existing resources)
Even when the actual causal mechanism is discovered and corrective action is taken to prevent it’s recurrence (read that statement carefully; the word preventive is used in a different context than taking simple preventive action), other causes can surface later to create the same non-conformance. We typically take corrective action against the cause not the Problem (the effect) in general. (See preventive action statement above)
Also since many non-conformances that we discuss in the context of ISO standards are people behavior system related, other people can take the same action or similar actions to create the same effect.
Discipline to a single way of doing things is anathema to many people...