The biggest problem is narcissists are enabled. We have to stop enabling them and start holding them accountable. Many narcissistic behaviors that are destructive are rewarded in relationships and society. Beyond that, until their world doesn’t work for them anymore, they will most likely not see a reason to change. If one person doesn’t enable them, another usually does.
Remember that you can’t help someone who doesn’t want to change or see a problem with their behaviors in the first place. They typically blame others as the problem because they are causing the narcissist problems. Cause and effect in relation to their behaviors and traits is very distorted.