some sci fi universe doesnt even have fighter crafts - or scarcely.
LoGH for instance, has about 98% battleships (mix of ship of the line, heavy cruiser, battleship, flagships and custom flagships of all kind). But, their ships were designed for that, massive, nearly primitive technology with nearly all guns packed in the front, minimal front surface, huge length, massive (alliance battleships are some 750m long, imperial battleships, 680m).
Fighter deployment are very rare, because its mostly suicidal - although, very effective, they are destroyed instantly if they get hit by anything, that is an enemy fighter beam or a battleship beam, even missile blast would demolish them fairly easily. but used strategically at melee range combat, they can destroyer battleships - alone, sometime.
It all depend on your universe... as of Freelancer, it seems more built around the concept of versatile small fighters than giant weapon platform.
Note that LoGH, is all about epic. It's the mythical battle of space, where armies of millions of battleships faces each others in battle formation, and where human casualities reaches the billions with ease in a single battle...
not exactly the proportion of FL, nor is FL about epic, really.