Oh, this is still going? Can we get a TL;DR version please?
And yes, it was mentioned many times that inRL, most of non-house factions wouldn't have access to capital ships (or to capital ships in large numbers) due to various reasons.
Just like these caps are required for balance purposes and to keep people interested in the mod.
So balance is >>> then realism in this case. You remove caps from factions/mod, you will reduce their player base.