Well, then you run into Lehman Brothers and Fannie Mae and Goldman Sachs and Bank of America and George Soros and all of a sudden the Left's arguments look pretty realistic. The public is righteously angry at the gaming of the system done by politically connected billionaires. The fault is in letting the political class (Democrats and Republicans) shift blame away from their contributors and puppet masters.
To the Free S**t Army, the guy who owns the local flower shop is just as big a villain as Soros, but he's closer at hand. So who do you think is going to suffer the effects of this class warfare? Who gets to take the blame and see his shop and life's work destroyed by protestors? Who gets to serve as a buffer against public outrage? It sure ain't gonna be Soros.
The middle class is hated by the rich, the poor, and the politicians, because they are not rich enough to guarantee political power to anyone who supports them but too independent to shut up and vote as they are told. Ergo, the decision has been made to reduce their numbers as much as possible.
I don't disagree with you at all, but it needs to be pointed out to the general public that in any system of government there are those who are politically connected and line their pockets on the backs of others. The politburo in the USSR comes to mind, as does the late Kim Jong-il and his minions. You don't eliminate that kind of cronyism by veering to the left. In fact, you make it much more entrenched and difficult to get rid of.