„Cloud“ ist a lot more than blob storage where encryption can help. As soon as you use a service that sees plain text (eg a database saas) encryption doesn’t save you from the service provider (and by extension foreign government). But as the article points out, data exfiltration is one problem, the other, imo bigger, problem is dependence on a foreign nation for critical infrastructure. The US government can decide to shut down almost all European IT and there is nothing Europe can do about it right now.