The book the article is inspired by[0] is an alternate history set during the reign of Augustus. It takes as its point of departure the capture of Archimedes of Syracuse -- instead of being killed, he is brought back to Rome.
Note that this is the mid-Republic period, before the dynamics of conquest and slavery completely dominated the Roman economy.
The book is written by Helen Dale, who set out to write a legal alt-history, not an economics alt-history per se. She's got the background for it: she's an award-winning novelist, studied classics at Oxford and Roman law at Edinburgh. My gut feeling is that any objection you have, she's thought about already.
[0] https://www.amazon.com/Kingdom-Wicked-Book-One-Rules/dp/0994...
1. Helen Dale, a novelist, has written a novel, Kingdom of the Wicked, of which the first book has recently been released[0].
2. It's set in an alternative history, during the time of Augustus.
3. Helen Dale believes an author's intepretation of her work is more meaningful, in a critical or literary sense, than a critic's. So she included an "Author's Note" in her novel, explaining the background leading to its creation.
4. The Author's Note was republished by the Cato Institute on their libertarianism.org website[1].
5. This essay is a reply to the Author's Note.
I've been hosting Helen's website for more than a decade. She is very, very, very smart and a damn good writer. She's also the right person for the right story.
I think you're going to hear a lot about this book in the coming year.
[0] https://www.amazon.com/Kingdom-Wicked-Book-One-Rules/dp/0994...
[1] https://www.libertarianism.org/publications/essays/authors-n...