[...]
I dont think that the cost/risk/reward is there, since there are many other digital currencies and users could potentially just migrate (Mt Gox would be a perfect example)
Always good to keep doing the math though.
This is all based on the assumption that BFL are incompetent. They're not

thousands of 500Gh/s rigs are filling the racks of air conditioned data centers, waiting for that fateful flip of the switch. Bwahaaaa
