Nope. The single largest bitcoin balance in an active address is (very probably, not offically confirmed) the internal mixer address for Silk Road. Satoshi Dice has a long way to go to catch up to them. Technically, however, no single person "owns" that address, and the value is possessed by a large number of users and dealers on Silk Road.
I'm not familiar with the ways Bitcoins are thrown around, what is R&S?.
The article (
http://eprint.iacr.org/2012/584.pdf) does not go into SilkRoad because it describes the transactions of addresses of the real early adopters (not SilkRoad or SatoshiDice). It describes a transaction (+50,000 BTC) of the first coins ever mined. This graph shows it very clear when you use your mouse:
http://statistics.ecdsa.org/PS: I do not think Bitcoin is a Ponzi scheme. I've read the old messages of Satoshi and i do not think it is a scheme. It is what it is. an experiment. What i do (think i) know is that a few people have control over it with 60% of all coins available today and maybe 25% in 125 years. That's all that raises my questions.