greed isn't against the law and neither is stupidity. greed breds stupidity. no law against it. but i wouldn't want to have any investment with someone or a business which is greedy to the point of being stupid.
Every once and a while... stupid greedy people get a hold of lots of money and this is how mother nature takes it away from them. It is all part of the economic evolution, we simply don't know what ideas work and don't until we try them. Hopefully the current ideas won't be tried again.