There's a very large and competitive market for dedicated servers and colocation though and depending on your load, it might be worth a look at switching to dedicated or leased infrastructure.
Owning the hardware is the only way to truly control your destiny as far as I'm concerned.
The only relevant competitors to AWS are Google and maybe MS Azure. Both also US companies.
No one else is anywhere near the level of scale and expertise AWS has.
You get the benefits of strong German privacy laws, on top of the EU's data protection directive[1].
I'm not sure how that works in Germany but I would sooner send a too-much-redacted scan and have them refuse and ask to see more of it, than send an actual complete scan of my ID to anyone but the government that issued it.
Not that governments are so good at not accidentally misplacing data. But it reduces the surface, at least.
Unlinking the two companies completely might satisfy what you appear to be angling for, but it would be, in essence, a potential competitor to Amazon at that point.
Microsoft have gone as far with Azure in Germany to sign an agreement where T-Systems own the data and the systems and Microsoft are simply a contractor supplying a service to them.
http://news.microsoft.com/europe/2016/09/21/microsoft-azure-...