Are you serious? A decentralised anonymous corporation stock exchange? I'm sure that the SEC and IRS are really going to approve of that.
The fact is, the IRS and SEC can disapprove all they want but they cannot stop it. The snake has many heads -- cut one off and 3 more grow out to replace it.

Anonymous, decentralized exchanges are an inevitability. Just like a toddler who can't get what he wants, western governments will kick, scream and throw tantrums about this. But they will lose, and make fools of themselves. This is the age in which government will begin to lose its grasp on the power to control our lives and our behaviors from cradle to grave. And Darkcoin is going to be a powerful, driving force in this global revolution.