People may complain we don't go after the big abusers, but we just don't have the SP to make much difference and could get wiped out by retaliation. Instead we work on smaller accounts who we may be able to persuade to take a less selfish path.
Unfortunately some just don't want to know. They don't understand that every user has the right and duty to have a say in where the rewards go. If everyone was greedy then the Steem platform would soon die off as the price went to nothing. The value is in making it a good place for creative people to prosper. There are cool apps being built that will bring o in the next wave, but we have to be vigilant that the abuse does not run out of control.
It's a shame that since of the vote and delegation sellers won't take some responsibility for how their services are used. I appreciate they are running businesses, but they may be harming the image of the platform they operate on.
It would be good if @blocktrades could make a comment. It is their choice, if they want to delegate to abusers, but if they are made aware it may help things.