They eventually "get it" and we stop infecting ourselves.2.

Geographical location (high virus infection rate/low virus infection rate), did the majority of their tenants have essential jobs with no loss of income or vise versa, were the tenants that didn't pay have issues paying rent prior to Covid-19, did the landlord not show enough compassion or did they show too much compassion, was there a lack of communication, etc.  

From the CDC about the 1918 flu pandemic: "It is estimated that about 500 million people or one-third of the world’s population became infected with this virus.

Downtown and in many neighborhoods you have to dodge tent cities, aggressive bums demanding money and watch out for the poop and infected needles littering the streets. 

Sixty million were infected.

The flu infects over 34 million people a year and has a mortality rate under 0.1%......

This year it's projected to be right around $1T (I'll bet the WH will throw a parade) Since we are talking about what it will take while ignoring the political fallout, the first step would be to get rid of the crony capitalism that is rampant in our health care system and has also infected much of the rest of the government whenever there are private contracts involved. 

I've been interested in REI for many years and have been infected by analysis paralysis.

We recommend it be fully evaluated by a qualified remediation contractor at this time.The boards below the bathroom plumbing are rotten and broken and heavily stained with bacterial and fungal growth, there is also a leak in this area .

LOL  Ping pong... a couple of the guys in my office have a bit of a rivalry going on:when I had my real estate brokerages the agents were more interested in sneaking porn.. my system was forever infected LOL