Requiring that you believe those companies that they won’t hand the keys over to the US at the first ask.

Like, the critical problem with the AWS sovereign pitch is that you must believe that they won’t give the keys to the US, and they also won’t give the source code that’s hosted in the US to the government either for them to find vulnerabilities in. I don’t know if that’s good enough unless you just need the data to stay in the EU and you don’t care if another country sees it.

I know they probably did some work on it (what if primary AWS goes rogue and the EU entity must work without it) but I don’t know if they explained how they’re safe to the public.

The harder problem here is that any real EU sovereign platform would have to come with ironclad guarantees that it isn't going to be directly or indirectly sold to a US party. And when enough customers move that marketshare is affected the bags with money tempting shareholders will get larger and larger.