I have wondered about this upon reading the latest Dawn Of The Jedi comic, how the Rakata with the aid of their Kwa benefactors were able to become very advanced and build ships that were powered by force sensitive slaves, had hyperdrives that zeroed in on planets strong in the force and managed to do many great things using the Dark Side of the force. While the Sith Lords and Jedi only remained marginally powerful by comparison and never were able to come close to this or duplicate what the Rakatans did, surely Palpatine and Darth Krayt and the others must have been aware of the powers that the Rakata and their Infinite Empire had, but no Sith Lord's ever achieved this technology or used Force Hounds at all, Palpatine had he learned how to do these things could have conquered the entire galaxy and been the greatest Dark Lord of the Sith ever. Of course the Rakata had access to Kwa technology and secrets, were united for over 10,000 years in their lust for war and conquest and worked together to accomplish great things using the Dark Side, i also wonder what the Rakata would have done if they had managed to capture an Infinity Gate? Could they have opened the door to planets in other galaxies with it? The Rakata using that would be dangerous, they make the Sith Lords and Yuuzhan Vong look weak by comparison.