Honestly I would love to build multi-unit homes but finding the money to do it is difficult. If I was of means I would fund it myself. I have the people and know-how to do it effectively but it’s a slow crawl to be able to get a project like that rolling without a large and flexible funding situation. Most people with the means realize the risk is too high/reward too little so they don’t do it. If it was me it would be out of ideological beliefs than financial gain. Utilitarianism is the way but you can’t convince a financial institution or even government agency to believe in you without difficult hurdles that limit the amount of people feeling its worth the work.

Call 911, yea the police will Show up but the persons best bet is a Paramedic or EMT who can de-escalate and provide appropriate mental health support. EMS is not supposed to enter the scene until it is safe so with the weapon you still need police. Any hotline will just call police first anyway.