School violence threat hotline, etc.

In a post below I suggested proactive strategies to prevent school violence.  This link is a follow-up.  Colorado has a non-government threat hotline and  Michigan passed legislation to create one.  Another issue discussed is the suicidal motivation of many shooters and suicide prevention.  Colorado also has a "Youth Mental Health First Aid" program. There's a lot that can be done.  Why isn't more being done? Worthwhile read if you want more on this topic.