One development that the medical community discovered later on was that putting patients on the ventilator increased their mortality rate, and they moved toward

One development that the medical community discovered later on was that putting patients on the ventilator increased their mortality rate, and they moved toward treating patients as long as possible without relying on a ventilator. See: https://www.modernhealthcare.com/safety-quality/some-doctors-moving-away-ventilators-virus-patients https://www.modernhealthcare.com/safety-quality/some-doctors... This information simply didn't exist and was highly hypothetical at the time ventilators were being requested.