Obamacare changed the facts on the ground. It has rewritten everybody's insurance plans and restructured the health insurance industry. Some tens of millions of people now get their health insurance through the exchanges, through the extension of Medicaid, or through coverage on their parents' plan. The Democrats were confident (1) that Obamacare would be popular once people saw it, which of course has backfired on them; and (2) that in any event, Obamacare would rapidly be too big, too complicated, and too embedded to be repealed. (2) is the problem the congressional Republicans must resolve. We can't just repeal it and return to the status quo ante -- and the status quo ante had enormous problems as well, which also need to be addressed.
Good and correct summary. Like trying to put Humpty back in the egg again, is harder than just demanding “repeal every word of it”.
Such are the problems of socialism.
But this new plan... it will be better than the last. How many times are people going to fall for that crap?