The concerns expressed seem a bit silly, unless the various Euro systems didn't take the very basic approach of using open standards and avoiding lock-in. Oh, and they should be backing up their data somewhere besides "in the cloud".
If those very basic precautions had been taken, migrating to a Euro cloud, or a private environment (open cloud stack) would be trivial.
If not, a lot of people should be fired...but granted, there are a lot of stupid people out there...
All that said, I'd say the concerns around this are vastly overblown.
“the very basic step” is a lot less basic than you imply.
There’s a million little proprietary APIs and the temptation to glue one to another, especially circumstances like AWS where they use lambdas for basic functionality that should have been just provided by the cloud provider itself.
If those very basic precautions had been taken, migrating to a Euro cloud, or a private environment (open cloud stack) would be trivial.
If not, a lot of people should be fired...but granted, there are a lot of stupid people out there...
All that said, I'd say the concerns around this are vastly overblown.