True. But those are being done after the fact. It's too late already for Italy. By comparison, the U.S. still has time now before the curve shot straight up to the max - then no amount of measures are going to be able to keep up with the viral infection rate (and death counts)
How much time do you think there is? Until recently there have been very little testing, so we don't even know where the US is on the curve.
Even if we assume it's early, that's still just a couple of weeks if time.
Italy had 100 total cases only ~20 days ago.
The problem with this virus is that it goes from 1 case to hell in only a couple of weeks. If you already have 100 confirmed cases, it's too late to stop what's coming.
According to mathematical models the capacity of your hospitals will be exceeded by more than 30 times.
Give it another week or two.
https://www.imperial.ac.uk/media/imperial-college/medicine/s...
https://ourworldindata.org/coronavirus#trajectories-since-th...