We're talking not about human technology, people. Wormholes/Gates aren't that tricky. Lanes, though, don't make sense. They don't. They're worldbenders, anchored to specific orientations around twirling systems...Its a far jump from jump drives to tradelanes, and its not one the science of mankind in freelancer are capable of reaching.
Why don't the hackers build them? Because they don't understand the tech. Ageria's Employees don't know what they're building, they're just putting the pieces together just so...and its not a puzzle, either, where the pieces make sense and can be taken back apart. They're turning specific raw materials into other things through processes devised by the DK for bending the universe....I seriously the Gallians (or any other humans) could reverse engineer the process for building them. They can't steal nearly enough for a house, either. They really shouldn't have them. Solution? Make their systems closer together, include inter system jhs.
The Omicrons and omegas, Outcasts, Corsairs, Zoners, Order, Nomads(ok, they've a few) BHG, and the Hessians do fine without tradelanes. Not needed. And for that matter, a couple of the lanes in gallia aren't even as efficient as cruise.