It is now moral i see...
"You can't mine anything with your 4 cores, because i rent 10000 cores and i take everything."
Damn money.
To be fair, mining on EC2 is quite unprofitable right now.
Its possible these were purchased for the month before the coin ever hit the exchange and prices were speculated to be much higher. So now they dump to make what little they can to recover from the loss of a EC2 investment.