Lockdown endgame? There won't be one until the West figures out personal responsibility
FTFY
There are no reliable flu vaccines. Every year flu mutates and kills hundreds of thousands of people. Covid will be a part of that.
This is not a "end lockdown to help the economy" this is "end lockdown or your economy will die and then your people will starve."
We don't worry about things that kill far more than covid.
We should support those who are vulnerable, but the government lockdown is also destroying lives, both of the current and future generations who will pay the economic price. Government handouts don't magically make stuff, they just transfer resources from you, back to you.
Interest rates are pretty much at an all-time low. To cover its costs, the government will have to tax more (which doesn't work if people aren't earning) or borrow more which means it will need to offer better (i.e. higher) interest rates. What will that do to people's mortgages? How many people mortgaged to the hilt because rates were low will have their house repossessed? As the banks sell off the repossessions and the house supply increases, with nobody wanting to take on more debt as rates climb, house prices will drop and equity gaps will open up. As the government seems to think printing money is a fine plan, we'll have inflation, higher interest rates and higher taxes. As the economy goes south, politics is going to get nasty too.
This is what happens when the government takes away the right and responsibility of people to protect themselves. They could have just issued a very strong recommendation that people stay home and enabled remote working as right, at least for those who can. Would more people have died? Quite possibly, but it is not the government's responsibility or within its capability to fix all natural disasters. The government's job is to empower citizens to direct their own lives.
That's before we get to the technical issues. If I go to the supermarket and pass fifty people, what is the expansion of vectors - exponential? Maybe not quite but not far off. If its two weeks before I get symptoms even just going for essential shopping blows out the number of possible contacts, before we even think of the few (like my parents) who don't have mobile phones. You can run the system, but it isn't going to stop something so highly contagious as covid.
Even in a worst-case scenario, were covid wipes out all the over-70's and the medically vulnerable, I'm not convinced the destruction will be complete as what we are currently headed for.