In fairness, the freighters could have been generically built by an independent contractor and available for purchase by any major power that needed them for transport logistics. Since they weren't considered military vehicles, they likely wouldn't have possessed special technology and restricted to being built by those governments internally. Case-in-point would be the countless "Antares"-class freighters we've seen throughout many years of multiple Trek series, and all their variants and owners. My gripe isn't with the prolific use of a generic design by multiple organizations. Far from it - that kind of thing happens IRL all the time. It just sticks in my craw that no real visible differences seem to have arisen to distinguish this variant over the things we've seen before, from nearly a millennium in the past. I mean, cars have been around since, what, 1885 (only about 140 years)? Should a Corvette still look like a
Benz Patent-Motorwagen?