Well, as always, it's all about winning elections. Ergo, it's about marketing.
People WANT healthcare reform. Everyone is paying higher premiums; everyone knows someone who was denied coverage; everyone knows someone without coverage.
Democrats have to market their ideas better, and more importantly, market the willingness to compromise. If the GOP says no to common sense ideas like insurance denials, blast the hell out of them. They're still the minority party, and Brown made a big deal about "let's get back to the drawing board"; if they start coming across as just the party of no in the face of reasonable attempts to meet them halfway, they screw themselves.
I think the Republicans are well aware that they won't be held responsible for things not getting done when they only have 41 seats in the Senate and are a huge minority in the House. It's way too easy to blame Democrats and way too easy to not bargain in good faith while blaming Democrats for not acting in bi-partisan manner.