I notice they focus on ships passing through. If you were to do people sized or small vehicle sized (4 dTons or less), the gate would not be that large or have as huge of demand. (Stargate, I see you!)
They also don't consider zero-point energy or any sort of 'suck power from another subspace' option for powering things. At wazoo TLs, that might also make sense.
I didn't quite see hyperspace, though the Subspace might be close.