Because things in Washington are run to maintain the status quo. No matter who's "in charge."
Anyway, I've been too busy and overwhelmed to actually write about my thoughts on this subject, so it's a good thing Glenn Greenwald did in Salon:
In what universe must someone be living to believe that the Democratic Party is controlled by "the Left," let alone "the furthest left elements" of the Party? As Ezra Klein says, the Left "ha[s] gotten exactly nothing they wanted in recent months." The Left wanted a single-payer system, then settled for a public option, then an opt-out public option, then Medicare expansion -- only to get none of it, instead being handed a bill that forces every American to buy health insurance from the private insurance industry. Nor was it "the Left" -- but rather corporatist Democrats like Evan Bayh and Lanny Davis -- who cheered for the hated Wall Street bailout; blocked drug re-importation; are stopping genuine reform of the financial industry; prevented a larger stimulus package to lower unemployment; refuse to allow programs to help Americans with foreclosures; supported escalation in Afghanistan (twice); and favor the same Bush/Cheney terrorism policies of indefinite detention, military commissions, and state secrets.
The very idea that an administration run by Barack Obama and Rahm Emanuel and staffed with centrists, Wall Street mavens, and former Bush officials -- and a Congress beholden to Blue Dogs and Lieberdems -- has been captive "to the Left" is so patently false that everyone should be too embarrassed to utter it. For better or worse, the Democratic strategy has long been and still is to steer clear of their leftist base and instead govern as "pragmatists" and centrists -- which means keeping the permanent Washington factions pleased.
Thanks to Dissenting in Part for bringing it to my attention.