Easy Logistics: Averted, even with nanotech, cornucopias, and suchlike, because it’s not like they don’t still require supplies of feedstock and energy, not to mention being inefficient to use for bulk manufacturing of things like ammunition – which is not a good place to be if the other side isn’t obliging you by being equally inefficient.

There’s a reason why the Eighth Lord of the Admiralty has the biggest stratarchy (the Stratarchy of Military Support and Logistics), which works very hard to keep equipment, fuel, ammunition and materials standardized, and to maintain the largest set of depots and fleets of oilers, tenders and transports around anywhere.  Tactics win battles; strategy wins campaigns.  Logistics wins wars.