There are a few things we do know:
- It's impossible to keep the lockdown in place for long enough to completely eliminate the virus. Why? Because there are still essential workers out there, giving it to each other and their families.
- Because we can't eliminate the virus, the main goal to limit spread so that our existing medical resources can handle it.
- End the lockdown too early, and like a wildfire, it will spark up again in a few weeks and we're back at square one (or close to it).
- Keep the lockdown too long and the impact to the economy will only get worse, requiring massive gov't bailouts/support. The longer we're locked down, the longer it's going to take for the economy to recover.
What seems to make sense to me is, keep the lockdown in place long enough to get in front of it. Basically, enough testing so that new cases can be immediately identified and quarantined. That alone will have a big impact.
Then start to identify other essential services and slowly relax restrictions while at the same time keeping up the early identification and isolation of new cases. If things flare up, stop and get in front of it. Then continue to relax the lockdown.
The only way I can see a rapid end to the lockdown is if we either get a vaccine approved (and mass vaccination occurs) or a very effective treatment is found that takes the pressure off of medical resources.