...and you guys are not considering that the 1000-BTC-whale and 300-BTC-whale could be the same guy...
almost for sure it's the same guy.
do you mean the same chinese exchange?

that would be the best case scenario
Guys, in stock exchanges, when a company goes IPO there's usually a limit of cap by investor (if a guy puts US$ 1mi, sometimes he gets just US$10.000 in shares). That aims situations like ours.
I don't know how it works in America, but here each investor has an social security number that is a proof that there won't be multiple buys by the same person. I wonder how it would be solved in this crypto enviroment...
We can't do anything now, rules were set. Let it be a warning for futures developments...by the do you know any cases (ethereum or maidsafe or ...) of a hostile action using this strategy?
a big amout is not necessarily a hostile thing. for example if I had that much money and decided to invest here, I would consider it still as a long term investment without manipulating anything. The only thing I am afraid of, is overfunding. That the product can just not reach the expectations set and you set all on those 2 people doing the right decisions...
It is still ok now, but its getting harder and harder... (and no, money does not solve all problems...)