This is the first book from the author and if I am not mistaken, it is self-published. It could use some more help with editing. That is why I did not give it more stars.
Think of this book as a prequel to the Expanse. The setting is similar, the Earth is governed by the UN and there is a terraforming project for Mars (and Venus) and at Callisto there is an installation that ships material and water (ice) to the terraforming projects.
Think also of the existence of the equivalent of the East India Company with its own private army, monopoly status and control over the judicial system and the government. What can go wrong when some theoretical physicist backed with VC money (to put it in today’s terms) threatens the status quo with faster than light travel?
This is what the book is about.
Could it have been written better? Yes. Does it matter that at times the author does not manage to keep the pace and be a bit boring? I don’t know. Maybe. It took me more than I anticipated to finish it.
Did I have a good time ultimately reading it? Sure.