We were beginning to generate some small interstellar trade routes before the Peloran made Contact. Every world had orbital elevators that gave them impressive local economies, and the luxury trade was picking up. San Lucas blood wine is an example of one of the Pre-Contact luxuries that all the rich had to at least pretend to love when amongst their peers. It was the civilized thing to do after all. Find some local resource that they could run better than the locals and turn it into a profit by bringing it back home for their fellows to ooh and ah over it. Many of the trade routes we run now found their origin in those heady Pre-Contact days when we thought we ruled the universe.