People who are concerned with a world economic collapse should really step up and justify this idea?
China and Korea seemed to have handled things well. Chinese production is opening back up and apparently even apple stores in China.
This quarantine is a short term thing, the initial phase will be stringent and business will suffer, but that's what unemployment insurance is for. The government is going to bail people out with money for food and basic needs. So where is this doomsday scenario of full economic collapse - we are far away from that, and depressions/recessions have happened before. You think government racking up a deficit is a problem? Where were you folks when the cheddar cheese burrito cut taxes for the rich and created a spaceforce, racking up more than 1 trillion in new debt?
Second, if you do nothing, you overwhelm the hospital system. You may get enough doctors sick that many hospitals won't even be able to function. This will be true choas. You can have all the health insurance you want, but if no hospital or doctor can service you, good luck getting critical care.
This is not a "oh it's just X people, what's the big deal", it's not clear if it will be 0.1% of the population, 1%, 10%, or whatever. It's not clear whether if we don't squash this thing now, it won't come back in full force during the fall. Also the ~65 crowd are some of the most world renowned researchers and professors. The death rate in the 50-60 category is also nothing to be laughed at. Lot of human capital there, certainly more than some 20-30 year old ignorant shmucks posting on a gaming board about how we should just let a whole bunch of people die because i need to save for muh iphone.
Get a grip.