That was the purpose of this lock down, to flatten the curve for the sake of care in the hospital.
I’m sure they weighed it out, have hospitals over flowing vs maintaining control. Most countries chose the latter.
Hospitals already know how to expand their facilities in a crisis. It is not the kind of thing that has never happened before. And, at this point, the lockdown has gone on long enough that facilities HAVE been expanded and extra equipment has been obtained. Currently the situation across most of America is the opposite of a shortage, it is a glut of unused hospital capacity. There is no longer any justification to continue the lockdown on the basis of a shortage of hospital facilities.