We're on AWS at work. I use Hetzner personally.

The main issue with switching is the services. On AWS we use KMS, SQS, DynamoDB. On hertzner we'd have to run an instance with software for that ourselves and then rewrite systems and do migrations etc. That's the expense.

Also KMS has no alternate because it's not just software. It's a HSM. So where do we store the master keys on Hetzner?

Don't get me wrong, I'd love to do it, not up to me unfortunately.