Maybe someone can help guide where I'm going with this. Manhattan serves approximately 4 million people on a typical weekday, 2.9 million on a weekend day, and a weekday night population of 2.05 million.
https://wagner.nyu.edu/files/rudincenter/dynamic_pop_manhattan.pdf
The average daily park attendance of MK is 57,000.
Here’s what the average attendance is at Disney theme parks around the world.
www.themeparktourist.com
So why the talk about WDW closing vs a large city - forget about the city's residents, but just quarantine entire cities from visitors. Regardless of business or pleasure, the theory of closure should apply. Right?
This is probably why closures won't happen. Rather, restrictions and reinforcement will be the most likely route until evidence proves otherwise.