we're going to use such tools to automate large chunks of administrivia.
If it's possible to use a network to parse massive amounts of, say, micro and macro economic data, why wouldn't a board of directors or CEO use it?
One of the aspects of AGI theory is being able to handle massive, noisy information. However, this is not actually related to automation. I would hope that a CEO or board of directors would use it. That is the point.
it could also be used for different related functions such as deducing the best decisions and most resource-efficient options for a business.,
Finding relevant information is one function. If it is sufficiently constrained you could use this information with traditional AI using brute force optimization or reduce the scope with machine learning tools. If it is not constrained then you could use abstractive tools. This is the purpose of these systems.
This effectively reduces the need for said executives by at least 99%, with only their human visages offering any real purpose.
We're already at that point. Corporate executives have a very low productivity rate. Reducing them by 90% would increase efficiency. I don't know what you mean by "human visage".
What's more, if one corporation uses such a network but another doesn't, the AI-empowered version will almost certainly gain a massive advantage and dominate, leading to others following suit.
Well, yes, that's the general idea. Also, personal units.
So, what is the problem you foresee?