As was said however, the Lane Hackers have most of the knowledge that Ageira possesses, including advanced tradelane technology.
If a Rheinland corporation were to start producing lane parts, who's going to stop them?
Logically, it only makes sense for Rheinland to at least know how to produce it's own parts with the danger of war with Liberty. You say the tradelane network would collapse without parts, how would Rheinland get the parts if they went to war with the nation that is the only source of said parts?