Source on your 20% number? That sounds really, really high.
Hospital beds aren't unlimited.
ICU beds full? Someone has a heart attack? Well, sucks to be them.
That's the part of covid everyone is ignoring: it creates an additional burden on the health care system, hospitals that normally are booked solid for surgeries can no longer handle those cases due to the emergency influx from a pandemic spreading like wildfire.
https://www.cdc.gov/nchs/covid19/nhcs/intubation-ventilator-...
Beds can be added on a temporary basis. Availability of trained healthcare providers is the more relevant limit.