None of the actors can be taken at face value, particularly with national security implications.'
But overall being a huge national security issue and potential shock to the US Cloud industry, its almost certain big tech would have been told to keep quiet and indemnified from any markets issues.
And a fairly large segment of civilian US Government agencies and projects operate on AWS platforms. Such as the compromised more than once NFIP, aka NVITS NFIP Virtual Information Technology System (NVITS) (NFIP being National Flood Insurance Program). I could mention more, but at a severe cost, due to an NDA. As NFIP is going to close down, due to a lack of congressional funding, that NDA is entirely moot, as is flood insurance in the US.