I'd go a little broader than that. I'd also want to see them drag in whoever made the decision to not reinstate the account, plus everyone who knew what happened and could have overridden the decision but chose not to do so.
> everyone who knew what happened and could have overridden the decision
that will never happen, unless documents & emails get discovered and all the cc'ed people get subpoena'ed and deposed. And even that won't catch everybody. Congressional committees don't have time for that.
Big corporations are adept at diffusing real responsibility among a faceless mass of people.