This conclusion (Satoshi=scammer) is inescapable, if you agree with certain assumptions:
1) Satoshi is highly intelligent
2) If Bitcoin wants to become currency, it must be widely distributed and in actual use (not hoarded)
3) Bitcoin goes against point 2) and Satoshi knew this.
Here is why Bitcoin goes against point 2) (as has been explained on this board before):
1) Bitcoin heavily favors early adopters. 50% of the currency supply is already mined, and Satoshi holds the biggest stack.
2) This fact entices people to hold onto their bitcoin and not spend them.
3) This fact discourages people from adopting bitcoin, as they would enrich the early adopters, unless they believe that they are early adopters as well that can still profit from a coming wealth transfer.
Pyramid, get rich quick nature:
It seems to me, that the distribution of bitcoin heavily favors its pyramid get rich quick nature. Satoshi never wanted to create currency, but instead was out to create a pyramid to enrich himself. He cleverly disguised this pyramid as a currency.
This might be the reason why he wants to stay anonymous.
The result:
A boom of people wanting to get rich. A bust once no one enters (believing that they are too late to the get rich quick party).
Destruction of confidence after the bust.
I think you have scam and "Skewed towards his favour" mixed up.
At this point, the market is it's own living breathing organism.
In America, a small portion of the population controls a large portion of the money supply, just as early adopters do bitcoin, but this doesn't stop the markets from functioning, all it means is that John Doe gets to buy Porsche's and Lobster tail every night.