They remain in business becuase they are meeting the need for a market. If there were no buyers, there would be nothing to sell (at least in a "free" market economy.
Instead of attacking the AQ (while it is hard), you should be focusing your attention at consumers. Which is exactly what Amir does in trying to educate here.
PT Barnum said it so well "There's a sucker born every minute"
By this logic, Madoff's Ponzi scheme should have remained legal (since there was no shortage of customers who bought into his false claims of outstanding performance of his financial products) and the authorities should have only focused on educating the public. Fortunately, laws are still enforced, so sooner or later such practices come to an end.