I can see your meaning Tempest and while I do agree the premise seems sound, it doesn't really hold water too well past the "immortality" part of his existence. At that point, think about it, his and anyone else's priorities would and DO change. He achieved what countless Sith who, while they may have been stronger in certain areas or for the scant few even near him in strength, never achieved what he did so he doesn't have to claw and scrape at every possible way of gaining power anymore. Essentially it comes down to: I have eternity to build a mountain, I can take my time and go by pebbles if I wish and still get there. But you may only have a year. Thus you are going to find the quickest, most efficient way of building that mountain as possible. I can choose to do the same with inifitely more time, or go slower and safer and eventually surpass you anyways.