There should also be a counter rule:
> Don't stick by your founders if they are creating horrible environments, such as Uber's, and are unwilling to make up for their mistakes.
If more investors had this sort of backbone founders might feel more accountability and not let these situations happen in the first place.
This would be at the expense of bad founders losing trust with their investors? Great. The good founders will be glad that the Kapor's stood up for what is right, and know that they will never be placed in the same situation themselves because they trust their own moral compasses.