Now I agree that full lockdown might not be the best option, but to go the other way around you need:
- a clear, rationale plan
- population buy in and some civic duty
- testing, testing, testing combined with a good infrastructure to isolate and follow the sick contacts.
Kind of a combo of what Korea and Singapore did. . . .
It didn't work out too well in the latter. My wife and I have been following the situation in Singapore closely because her brother and his large multi-generational family live there.
The Singaporean government attempted to control the spread of the disease without closing schools and non-essential businesses. It instituted fever monitoring in buildings accessible to the public and aggressive contact-tracing of individuals who might have been infected. It also enacted 14-day mandatory isolation periods for anyone entering the country. (My wife's brother and his wife rushed back from a visit to the United States to beat the deadline for the isolation period, but their kids insisted they isolate themselves for two weeks, anyway, before they would bring their grandchildren to see them!)
The Singaporean regime seemed to be working well for a while, but recently there have been multiple new outbreaks of COVID-19 infection, including several large-scale ones in housing projects where guest workers live. The week before last Singapore finally closed the schools, mandated the use of face masks, and instituted "social distancing" restrictions similar to those in North America and Europe. Last we heard even more stringent controls were being considered.
Apparently the Singaporean authorities underestimated the infectiousness of the SARS-CoV-2 virus and overestimated their ability to control the spread through testing and contact-tracing. Even in a small country with an authoritarian (albeit benignly so) government, preventing large-scale infection seems to be very difficult with this disease.