Sure, some countries had plans and scenarios made before, but nonetheless got caught with their pants down. E.g Switzerland doing a nationwide epidemic simulation back in 2013, identifying serious flaws in preparedness, but not acting on it at all.
And even if, it would most likely not have panned out as neatly as predicted.
We haven't dealt with a situation like this before, so things are going to be messy. Opinions changing as more information comes in, not necessary the most effective measure being taken, coordination among countries not working, people fighting for attention etc. I reckon it's going to take a couple years of analysis to be able to look back and with more certainty say what would have been the optimal way to deal with it for different regions and what the right tradeoffs might have been.