Comment by bob1029

I don't actually see what's stopping European firms from figuring this out in terms of hardware infrastructure.

Buildings full of computers aren't that difficult a problem to solve compared to things like semiconductor manufacturing or energy.

Perhaps the issue is more on the software and architecture side. Getting sucked into weird cloud products that don't translate clean to other premises is perhaps the more difficult aspect of this for larger firms. I've made a very strong point to only use EC2, Route53, S3 and Azure AD. Moving between environments is a lot easier when you stick with the VM as the unit of deployment. Getting out of something like a MSSQL hyper scale instance is simply not possible without switching to a different SQL provider or accepting new operational risks.