I'd say that individual companies need to make contingency plans for when the US puts up their own great firewall (assuming they haven't already, since I'm in the US).

I think it would be prudent for nations that have Google/Amazon/Microsoft datacenters in them to create legislation that allows them to nationalize or detach those services from the US. I have no doubt that we will eventually have our own policy that gives us the privilege to snoop on foreign data in foreign datacenters that are running US owned hardware.