I have been thinking about this a lot and though I'm not at all an expert it seems like people just assume the internet will always be accesible and exist forever no matter what happens to human civilization, which is obviously not the case. There are thousands of companies that make the thing work as effectively as it does and as we are seeing with the labor shortage, relatively small shocks impact the company in big ways.

I doubt the cloud would be _that affected in the case of a US civil war but I could see it if there was an economic collapse on the scale of the great depression. I think a us civil war is rather unlikely and people will sort themselves into red states/blue states with potential succession long before there is widespread violence. Economic collapse seems far more likely and would be much more damaging.