I'm picking few points there as I'm losing my interest.
Italy did continue like normal quite long. First there were limited or no instructions and when instructions were given, they were quite strongly ignored at first. One of the issues is that even medical staff had limited instructions and the virus had easy to spread in hospitals and people who had been infected in hospitals spread the virus among their family and other people. The lockdown was enforced in a situation the virus had already spread, so it wasn't as effective as it could have been.
Also, are you pretending that the "further outbreak" in New Zealand is as serious as if they hadn't enforced a lockdown? Their "new outbreak" is 0-3 new cases per day. If they hadn't had a lockdown, the numbers wouldn't be even close that low.
You have an interesting way to see things if you are more worried about some businesses crashing, but you're OK with people dying and their health being permanently damaged. How do you assume someone can run a business if they're dead?