The S6000 had 256K which was way ahead of it's time, I currently have 64 megs (PA800) and that is not enough, why would 1 gig add thousands to the price? the year is not 1985 but 2011 and components have become very cheap we pay for R&D not components.
At the way the musicians salaries are going, and the economic crises, looks like we we will upgrade less frequently.