Why are there distances between Stations and Jumpgates?

[Barrier]

The first word that comes to mind is traffic. Yes, traffic in space.
The second word that comes to mind is resources. Stations are beside the "good stuff".
Third word that comes to mind is relations. Competitors don't want to be too close to each other. That also applies to Enemies, like Red Hessians and Corsairs.

Hope that makes it clear.