Your numbers are way off. The CDC estimates that since the start of the pandemic the hospitalization rate has been 5% and the fatality rate has been 0.6%. Of the hospitalized patients only a fraction needed high-end medical intervention such as mechanical ventilation.

https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/burd...

The hospitalization and fatality rates are far lower now for vaccinated people.

0.6% die, and some rather rubbery number end up with symptoms lasting from 6 weeks, or 6 months, or something. The rubbery number is sometimes quoted as 1/3 of people who enter hospital, which if 5% enter hospital would mean about 2% of the population die or are so incapacitated they can't work for some number of months. By comparison, just about everybody hospitalised for flu is fully recovered in 2 weeks. https://www.medicalnewstoday.com/articles/long-covid

2% is getting up there. Even if 75% avoid that fate by getting vaccinated, incapacitating 2% of the remainder will be enough to send us into a deep recession.

Source on your 20% number? That sounds really, really high.

For every person in the hospital due to covid is another person not able to receive care.

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.

Hospitals hit capacity and run out of beds and ventilators. This is a hard threshold. Once you pass it, mortality goes through the roof.

Running out of ventilators would have minimal impact on the mortality rate. Mechanical ventilation is currently only used as a last resort for <5% of hospitalized patients, and even with ventilators many of those patients don't survive.

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.

My point is even if hospitals were closed completely, it still seems unlikely that 20% of people who catch COVID would die from it.