Personally, I think part of what SK did was, by having drive-thru testing, EVERYBODY was made keenly aware of the problem, and reacted accordingly.
I have pretty good faith in our ability to self-isolate and minimize transmission. Except people were not trustworthy, so we needed to ban big gatherings and stuff. I hope they can refrain from shutting down gyms or closing restaurants. Restaurants can to most of their sales with carry-out, and gyms (the good ones) are some of the cleanest places you can find short of hospitals (and don’t have the problem of a constant stream of sick people).
The virus is invisible until you test it. period. Unless you test you are making a guess. Who has ever constantly achieved success through guessing?