Logic like this is 1 reason why I feel that a Kraken might be more useful than an Idris. The Idris can only carry a few fighters at most. While a few fighters will be good against a band of NPC pirates, they won't do much harm to another Idris.And this is where game design is a struggle. Do you make capital ships the top tier that makes fighters mostly irrelevant or do you make capitals slow so that fighters have a nitch? While it doesn't make logical real-world sense especially since there shouldn't be a max top speed until you get closer to the speed of light (near .8 to .9). From a game mechanic standpoint, it is valid as it allows those in fighters and bombers to have a purpose and giving the capital ships some severe handicaps. While this doesn't mirror the real world it gives gameplay opportunities that encourage groups to work together with many options. So with capital ships many strengths from defense and firepower it needs some limitations and the easiest is to just make it slow otherwise why would you fly in anything else? While costs are an initial game limitation as the player economy saturates with wealth this becomes a nonfactor. The reason for the saturation of the player economy is often to allow causal players to still be able to achieve most of the gameplay loops without hurting the overall gameplay experience.