BRAVO! A magnificent explanation, and I agree in all the details. The design of the Bitcoin system contained hidden 'features' (for Satoshi) that were designed to earn him the 'seigniorage'
http://en.wikipedia.org/wiki/Seigniorage of a rather large portion of the Bitcoins issued early in the process. Accident? I don't think so. I've already said that I think Satoshi's entitled to about $1 billion (USD), approximately, as reward for what he has done. Which, about now, he has received. (At current Bitcoin prices, or at least as of a month or so ago.) But, as you also noticed, the situation isn't static, and he is virtually guaranteed far more
value if he simply doesn't cash-in his current Bitcoin holdings. This isn't market-driven: It is algorithm-driven, defined by the assumptions and decisions baked into the software Satoshi 'so generously' (<AHEM>!!! Sarcasm-warning!) provided the world. Had just a few things been changed, the amount he could reasonably have expected to 'earn' would have been very different. Bitcoin should have been harder to 'mine' at the beginning than it was; Bitcoin should be easier to 'mine' now than it actually is. I think that it is the ratio of these difficulties which define how much advantage an early-adopter has had over those who came later. This difference is not defined by a law of nature, it is defined by algorithm and software. And I strongly doubt that many people (other than Satoshi) realized this in 2009.
Jim Bell