That's true but the left at least calls for some restraint on the role of money in politics. The Republicans (McCain was an honorable exception) want to throw the gates as wide as possible for unlimited contributions, secret contributions, foreign contributions. If it was up to progressive Democrats, there would be much stricter limits on how much money could be poured into political campaigns, particularly by large and influential donors. The more politics is driven by money, the more politicians are dependent on special interests and corporations. Both sides play in the system, but at least one side occasionally fights the system (not nearly as hard as I'd like).
No one was calling for such reforms on the left last time when Obama opted to not take public funds.
Like you and many other Americans I expect, I would like to see some restrictions placed on funds where both sides are on equal footing, but we all know that is a pipe dream. Money has always controlled politics and will continue to do so as neither side really has a vested interest in biting the hand that feeds them.
I guess my whole gripe about this thread is its partisan hackery, but I forget I am on the Atlas forum.