I live in Poland. It seems most cases are connected with somebody who recently came from abroad. Closing borders may seem like a drastic measure but much less drastic that waiting couple of days and doing it anyway + much more.
My point of view is it is a bit foolish to slowly, gradually escalate measures. It would be probably wise cause of action with a completely new disease which we don't know yet, but it is not a new disease now. We saw what happened to China. We know it is difficult to control and if people are allowed to move it is neigh impossible to prevent from spreading.
That's averaged, of course. If your refrigerator breaks, your individual value will increase. But as a whole, it will still decrease.
It also gives more time to develop protocol to treat it.
"Far and away, the most important thing to do is flatten the curve of the epidemic so that our health systems can cope and to give time for the scientists to research vaccines and treatments."
And depending on how badly something broke you do replace it. How many people do you know with 50 year old fridges?