[@Lucidnonsense]
Interesting. Another option would be to forgo smaller soacecraft entirely and instead use a series of space elevators/catapults for in system travel? And then some kind the 'the Guild'-esque conglomerate that has a monopoly on interstellar-transport. That or solar sails/medusa drivez, but the major sentient race(s) don't live planet bound, but instead mega-structures close to the star. Thereford the only travel that is non-interstellar or non-domestic would either be industrial or somewhat less-than-abovd board.