I totally see what you're saying, however I will say this: This is GOING to happen, BUT not in the sense that everybody thinks it will.
If people think Goldman Sachs, JPM chase, CIti, Wells Fargo, BONY Mellon, etc. will be subject to this, then they have another thing coming. The Tobin tax (FTT) is coming, but it will only hit the people who were NOT responsible for all the problems for which the public wants to avenge. The guy that will be penalized is the daytrader sitting at home in his underwear with his $30,000 Etrade account, and the hedge fund running $100 Million, not the financial "masterminds" that floated $1 quadrillion+ of engineered financial crap and brought down the system. The FTT WILL be a reality, just like the carbon tax, and will be one of the many funding mechanisms for the new global financial architecture which has been devised by the same elitists that originally crashed the system with their "financial innovations."