That's because is this where our politics has led us: to a fusion of liberal and conservative principles. Cover more people, but do it using market mechanisms and private players.
Both presidential candidates have obviously endorsed this approach in their own ways. And at this point there isn't much out there in the way of alternatives.
Limiting our alternatives was the whole point of getting Romney nominated. The reason the Republican establishment fought so hard to push him to the fore (even to the point of alienating the core of the party and losing the election) is that they want control of health care just as much as the Democrats do.