This post by Ian Welsh is one of the best articulations of what is going on with the economy and the Democratic Party, that I have come across: Open Left:: Why Democrats Are Trying to Commit Electoral Suicide. I encourage you to read it.

Moreover they understand that with a few exceptions, the financial economy is the American economy. It’s what the US sold to the rest of the world: pieces of paper in exchange for real money which could be used to import real goods, so Americans could live beyond their means.
Shut that down and what’s going to replace it? How are you going to avoid an immediate meltdown of the US standard of living? How are you going to avoid a large part of the elite being wiped out? You or I may have answers to that, except to wiping out a large chunk of the elite, which is something which needs to be done, but those who grew up under the system, who believe in the system, and who ran the system don’t. What they’ve done all their lives is what they understand. And more to the point the system has been good to them. The last 35 years may have been a bad time to be an ordinary American, but the elite has seen their wealth and income soar to levels even greater than the gilded age. The rich, in America, have never, ever, been as rich as they are now.
And if you’re a member of the elite, your friends, your family, your colleagues—everyone you really care about, is a member of the elite or attached to it as a valued and very well paid retainer. For you, for everyone you care about, the system has worked. Perhaps, intellectually, you know it hasn’t worked for ordinary people, but you aren’t one of them, you aren’t friends with them, and however much you care in theory about them, it’s a bloodless intellectual empathy, not one born of shared experience, sacrifice and the bonds of friendship or love.

There is much more, so go read.