In reply to all of your recent comments,
I think you can only reply so many deep. I don't know why they designed it that way.
As for the issue of how to reduce the relative influence of founders and early adopters, I don't think there is an explicit mechanism for that. From what I've gathered, they're expecting it to even out organically; as more and more people come into the system, more and more SP is distributed, and the people with big balances end up wielding less relative power. I'm a bit skeptical, but I'm participating nonetheless.