Well that's just it.  Who cares if they gouge the shit out of each other?  As long as they're no longer raping and pillaging retail traders, then let them find whatever loop holes they want to go off and do it to each other.

Taxing it just seems like the wrong response.  By taxing it, we're giving it the rubber stamp of approval as ethical and ok to do, as long as they pay a piddly 1%.