I disagree completely. Disney makes money on their after-hours ticketed events with a capacity similar to what will probably be implemented post-COVID. They do not need the masses they usually receive during the day to make money. Plus, many high expense items, such as live entertainment, will be scaled back, lowering operating costs significantly. On top of all of that, they do not even need to make money to open right now, only lose less money than if they were to remain closed.
In general, I think there are two points that need to be addressed:
1) WDW, and the country, will definitely be opening before a potential vaccine or cure, both of which have no guarantee of ever occurring, just due to the human spirit. People cannot be locked up forever. WDW may or may not be the first resort open, but it will definitely open if everyone else is because any bad PR can be avoided by the industry moving as a unit and there is money to be made.
2) No one is making anybody go to WDW when it opens. In fact, anybody can disagree with WDW being open, and that is okay. If anybody truly wants to avoid the virus, they will have to stay indoors and self-isolate long after restrictions are lifted and a reopening occurs. Shutting the country down for the virus makes sense for a short while, but society has always accepted preventable deaths at the expense of progress and people enjoying life. It is why driving is legal even though 1.25 million drivers, passengers, and pedestrians (not even electing to drive at all) die every year in car crashes.
No, they do not "make their money" from those events and could not subsist on just that kind of capacity. They make money on them because they are double selling the park, essentially. Meaning you have 60,000 paying day guests then you get 25,000 more people (many of whom already had a ticket for the day) to buy a ticket which costs almost the same as a full day ticket but for only five hours. It's ingenious but the money comes from they are essentially turning one park day into 1.5.
1) Disney will open when they are good and ready. You're going to see lots of regional parks open well before WDW. They have no interest in opening to a 1/3 capacity only to see an outbreak on property and have to close again. The PR damage from that would be devastating.
2) As has been explained ad nauseam... Vehicle accidents are not contagious. If one car accident caused two, which caused four, which caused eight, etc you can be sure we'd restrict driving to essential trips only until we could get a handle on it.