It may very well collapse under its own weight. Many states won't set up the exchanges upon which Obamacare depends. Premiums are still skyrocketing and people are still angry. Democrats will spend ANY amount of money they can get through congress (thank goodness for House Republicans) to prop it up but they may not get the money they need.
If enough common people smell the fecal matter in the Obamacare cookie I call a Fecal Festoon, THEY will demand congress get rid of it. Other entitlements stayed because the people loved them. This one is different and it could well die on the vine. Outright repeal is impossible until at least 2016 and only if it stays grossly unpopular. Otherwise, all but the very wealthy are totally screwed as we add 30 million new patients and not one new doctor. Brilliant idea there, Democrats.