There's virtually no chance that the automated system that banned him knew the account belonged to someone with whom Stadia was doing business. Even if we assume there's a list of high profile people/accounts not to automatically disable, I can't see him being on it.
Thanks; I've initiated that process on your advice. Is the data in a reasonable format and not just something you can re-import into a replacement google account?
It's possible to have a system that marks high profile accounts that shouldn't have automated actions applied ... that it appears Google doesn't have something like this is worrying.