Nobody has good answers for any of these things. It's a folly to think someone else has it figured out.
We don’t know that. Only history will tell us who figured it out and why.
What I don’t understand is why there is a clear decision between decisions and delivering on decision, other than the artificial need to retain control.
I don’t see a real roadblock that will prevent AI making better devisions than humans.
Someone who justifiably holds beliefs about the eventual impact of AI that later turn out to be true---can they be declared to have been knowledgeable about the subject matter?
And maybe corporations make similar decisions.
(You might counter that there will be local AI. This is true but it’s still risky to let an autonomous system have all your sensitive information, especially in the AI hacking age.)