Earlier quoted context omitted.
How do you propose to isolate the > 55 age group when no one younger is isolating? Nurses, doctors, people they live with will be a vector and pass it to them. And the under 55 age group (at .11% IFR) is still not going to want out and blindly get infected as that is still hundreds of thousands of deaths - leading to them avoiding being out in sizable numbers and still causing economic problems. [Source: https://www.…
The economic problem due to lockdown > than the economic problem hundreds of thousands of deaths.
Most people don't spend money on things/do stuff when they are afraid of dying while doing so. Hundreds of thousands of deaths due to uncontrolled population spread, randomly (nearly) amongst the population is going to cause the economy to crater - and even the possibility of it already did before any lockdowns happened.
The lockdowns just stopped the 25% (guess) of the population that is going to YOLO anyway from causing even more damage. The businesses were still going to get a huge hit regardless.